Update URLs to gitlab-docs project from 'master' to 'main'

doc/development/documentation/graphql_styleguide.md

@@ -78,7 +78,7 @@ You should include a link for your new document in the global navigation (the li
 left side of the documentation website). To do so, open a second MR, against the
 [GitLab documentation repository](https://gitlab.com/gitlab-org/gitlab-docs/).
 
-We store our global navigation in the [`default-nav.yaml`](https://gitlab.com/gitlab-org/gitlab-docs/-/blob/master/content/_data/default-nav.yaml) file, in the
+We store our global navigation in the [`navigation.yaml`](https://gitlab.com/gitlab-org/gitlab-docs/-/blob/main/content/_data/navigation.yaml) file, in the
 `content/_data` subdirectory. You can find the GraphQL section under the
 following line:
 

doc/development/documentation/index.md

@@ -156,7 +156,7 @@ Nanoc layout), which is displayed at the top of the page if defined:
 
 - `reading_time`: If you want to add an indication of the approximate reading
   time of a page, you can set `reading_time` to `true`. This uses a simple
-  [algorithm](https://gitlab.com/gitlab-org/gitlab-docs/-/blob/master/lib/helpers/reading_time.rb)
+  [algorithm](https://gitlab.com/gitlab-org/gitlab-docs/-/blob/main/lib/helpers/reading_time.rb)
   to calculate the reading time based on the number of words.
 
 ## Move or rename a page
@@ -177,8 +177,8 @@ There are two types of redirects:
 - [GitLab Pages redirects](../../user/project/pages/redirects.md),
   for users who view the docs on [`docs.gitlab.com`](https://docs.gitlab.com).
 
-The Technical Writing team manages the [process](https://gitlab.com/gitlab-org/technical-writing/-/blob/master/.gitlab/issue_templates/tw-monthly-tasks.md)
-to regularly update the [`redirects.yaml`](https://gitlab.com/gitlab-org/gitlab-docs/-/blob/master/content/_data/redirects.yaml)
+The Technical Writing team manages the [process](https://gitlab.com/gitlab-org/technical-writing/-/blob/main/.gitlab/issue_templates/tw-monthly-tasks.md)
+to regularly update the [`redirects.yaml`](https://gitlab.com/gitlab-org/gitlab-docs/-/blob/main/content/_data/redirects.yaml)
 file.
 
 To add a redirect:
@@ -412,7 +412,7 @@ on how the left-side navigation menu is built and updated.
 
 NOTE:
 To preview your changes to documentation locally, follow this
-[development guide](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/README.md#development-when-contributing-to-gitlab-documentation) or [these instructions for GDK](https://gitlab.com/gitlab-org/gitlab-development-kit/blob/main/doc/howto/gitlab_docs.md).
+[development guide](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/README.md#development-when-contributing-to-gitlab-documentation) or [these instructions for GDK](https://gitlab.com/gitlab-org/gitlab-development-kit/blob/main/doc/howto/gitlab_docs.md).
 
 The live preview is currently enabled for the following projects:
 

doc/development/documentation/site_architecture/deployment_process.md

@@ -6,7 +6,7 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 # Documentation deployment process
 
-The [`dockerfiles` directory](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/dockerfiles/)
+The [`dockerfiles` directory](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/dockerfiles/)
 contains all needed Dockerfiles to build and deploy <https://docs.gitlab.com>. It
 is heavily inspired by Docker's
 [Dockerfile](https://github.com/docker/docker.github.io/blob/06ed03db13895bfe867761b6fc2ad40acf6026dd/Dockerfile).
@@ -15,10 +15,10 @@ The following Dockerfiles are used.
 
 | Dockerfile | Docker image | Description |
 | ---------- | ------------ | ----------- |
-| [`Dockerfile.bootstrap`](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/dockerfiles/Dockerfile.bootstrap) | `gitlab-docs:bootstrap` | Contains all the dependencies that are needed to build the website. If the gems are updated and `Gemfile{,.lock}` changes, the image must be rebuilt. |
-| [`Dockerfile.builder.onbuild`](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/dockerfiles/Dockerfile.builder.onbuild) | `gitlab-docs:builder-onbuild` | Base image to build the docs website. It uses `ONBUILD` to perform all steps and depends on `gitlab-docs:bootstrap`. |
-| [`Dockerfile.nginx.onbuild`](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/dockerfiles/Dockerfile.nginx.onbuild) | `gitlab-docs:nginx-onbuild` | Base image to use for building documentation archives. It uses `ONBUILD` to perform all required steps to copy the archive, and relies upon its parent `Dockerfile.builder.onbuild` that is invoked when building single documentation archives (see the `Dockerfile` of each branch. |
-| [`Dockerfile.archives`](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/dockerfiles/Dockerfile.archives) | `gitlab-docs:archives` | Contains all the versions of the website in one archive. It copies all generated HTML files from every version in one location. |
+| [`Dockerfile.bootstrap`](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/dockerfiles/Dockerfile.bootstrap) | `gitlab-docs:bootstrap` | Contains all the dependencies that are needed to build the website. If the gems are updated and `Gemfile{,.lock}` changes, the image must be rebuilt. |
+| [`Dockerfile.builder.onbuild`](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/dockerfiles/Dockerfile.builder.onbuild) | `gitlab-docs:builder-onbuild` | Base image to build the docs website. It uses `ONBUILD` to perform all steps and depends on `gitlab-docs:bootstrap`. |
+| [`Dockerfile.nginx.onbuild`](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/dockerfiles/Dockerfile.nginx.onbuild) | `gitlab-docs:nginx-onbuild` | Base image to use for building documentation archives. It uses `ONBUILD` to perform all required steps to copy the archive, and relies upon its parent `Dockerfile.builder.onbuild` that is invoked when building single documentation archives (see the `Dockerfile` of each branch. |
+| [`Dockerfile.archives`](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/dockerfiles/Dockerfile.archives) | `gitlab-docs:archives` | Contains all the versions of the website in one archive. It copies all generated HTML files from every version in one location. |
 
 ## How to build the images
 
@@ -36,7 +36,7 @@ and tag all tooling images locally:
    ```
 
 For each image, there's a manual job under the `images` stage in
-[`.gitlab-ci.yml`](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/.gitlab-ci.yml) which can be invoked at any time.
+[`.gitlab-ci.yml`](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/.gitlab-ci.yml) which can be invoked at any time.
 
 ## Update an old Docker image with new upstream docs content
 

doc/development/documentation/site_architecture/global_nav.md

@@ -23,7 +23,7 @@ Global navigation (the left-most pane in our three pane documentation) provides:
 ## Adding new items
 
 To add a topic to the global nav, edit
-[`navigation.yaml`](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/content/_data/navigation.yaml)
+[`navigation.yaml`](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/content/_data/navigation.yaml)
 and add your item.
 
 All new pages need a new navigation item. Without a navigation, the page becomes "orphaned". That
@@ -109,7 +109,7 @@ the data among the nav in containers properly [styled](#css-classes).
 ### Data file
 
 The data file describes the structure of the navigation for the applicable project.
-It is stored at <https://gitlab.com/gitlab-org/gitlab-docs/blob/master/content/_data/navigation.yaml>
+It is stored at <https://gitlab.com/gitlab-org/gitlab-docs/blob/main/content/_data/navigation.yaml>
 and comprises of three main components:
 
 - Sections
@@ -267,9 +267,9 @@ Examples of relative URLs:
 
 ### Layout file (logic)
 
-The [layout](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/layouts/global_nav.html)
+The [layout](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/layouts/global_nav.html)
 is fed by the [data file](#data-file), builds the global nav, and is rendered by the
-[default](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/layouts/default.html) layout.
+[default](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/layouts/default.html) layout.
 
 The global nav contains links from all [four upstream projects](index.md#architecture).
 The [global nav URL](#urls) has a different prefix depending on the documentation file you change.

doc/development/documentation/site_architecture/index.md

@@ -196,11 +196,11 @@ The links pointing to the files should be similar to:
 ```
 
 Nanoc then builds and renders those links correctly according with what's
-defined in [`Rules`](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/Rules).
+defined in [`Rules`](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/Rules).
 
 ## Linking to source files
 
-A helper called [`edit_on_gitlab`](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/lib/helpers/edit_on_gitlab.rb) can be used
+A helper called [`edit_on_gitlab`](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/lib/helpers/edit_on_gitlab.rb) can be used
 to link to a page's source file. We can link to both the simple editor and the
 web IDE. Here's how you can use it in a Nanoc layout:
 
@@ -223,9 +223,9 @@ for its search function. This is how it works:
    every 24h and [stores](https://community.algolia.com/docsearch/inside-the-engine.html)
    the [DocSearch index](https://community.algolia.com/docsearch/how-do-we-build-an-index.html)
    on [Algolia's servers](https://community.algolia.com/docsearch/faq.html#where-is-my-data-hosted%3F).
-1. On the docs side, we use a [DocSearch layout](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/layouts/docsearch.html) which
+1. On the docs side, we use a [DocSearch layout](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/layouts/docsearch.html) which
    is present on pretty much every page except <https://docs.gitlab.com/search/>,
-   which uses its [own layout](https://gitlab.com/gitlab-org/gitlab-docs/blob/master/layouts/instantsearch.html). In those layouts,
+   which uses its [own layout](https://gitlab.com/gitlab-org/gitlab-docs/blob/main/layouts/instantsearch.html). In those layouts,
    there's a JavaScript snippet which initiates DocSearch by using an API key
    and an index name (`gitlab`) that are needed for Algolia to show the results.
 

doc/development/documentation/testing.md

@@ -222,7 +222,7 @@ build pipelines:
    ```
 
    We recommend installing the version of `markdownlint-cli`
-   [used](https://gitlab.com/gitlab-org/gitlab-docs/-/blob/master/.gitlab-ci.yml#L447) when building
+   [used (see `variables:` section)](https://gitlab.com/gitlab-org/gitlab-docs/-/blob/main/.gitlab-ci.yml) when building
    the `image:docs-lint-markdown`.
 
 1. Install [`vale`](https://github.com/errata-ai/vale/releases). For example, to install using
@@ -240,7 +240,7 @@ It's important to use linter versions that are the same or newer than those run
 CI/CD. This provides access to new features and possible bug fixes.
 
 To match the versions of `markdownlint-cli` and `vale` used in the GitLab projects, refer to the
-[versions used](https://gitlab.com/gitlab-org/gitlab-docs/-/blob/master/.gitlab-ci.yml#L447)
+[versions used (see `variables:` section)](https://gitlab.com/gitlab-org/gitlab-docs/-/blob/main/.gitlab-ci.yml)
 when building the `image:docs-lint-markdown` Docker image containing these tools for CI/CD.
 
 | Tool               | Version   | Command                                   | Additional information |