Fix URLs broken by master branches being renamed to main

doc/development/architecture.md

@@ -528,7 +528,7 @@ You can use it either for personal or business websites, such as portfolios, doc
 
 #### GitLab Runner
 
-- [Project page](https://gitlab.com/gitlab-org/gitlab-runner/blob/master/README.md)
+- [Project page](https://gitlab.com/gitlab-org/gitlab-runner/blob/main/README.md)
 - Configuration:
   - [Omnibus](https://docs.gitlab.com/runner/)
   - [Charts](https://docs.gitlab.com/runner/install/kubernetes.html)

doc/development/documentation/site_architecture/index.md

@@ -99,7 +99,7 @@ The pipeline in the `gitlab-docs` project:
 
 Once a week on Mondays, a scheduled pipeline runs and rebuilds the Docker images
 used in various pipeline jobs, like `docs-lint`. The Docker image configuration files are
-located in the [Dockerfiles directory](https://gitlab.com/gitlab-org/gitlab-docs/-/tree/master/dockerfiles).
+located in the [Dockerfiles directory](https://gitlab.com/gitlab-org/gitlab-docs/-/tree/main/dockerfiles).
 
 If you need to rebuild the Docker images immediately (must have maintainer level permissions):
 

doc/development/documentation/testing.md

@@ -199,7 +199,7 @@ You can find Vale configuration in the following projects:
 - [`gitlab-runner`](https://gitlab.com/gitlab-org/gitlab-runner/-/tree/main/docs/.vale/gitlab)
 - [`omnibus-gitlab`](https://gitlab.com/gitlab-org/omnibus-gitlab/-/tree/master/doc/.vale/gitlab)
 - [`charts`](https://gitlab.com/gitlab-org/charts/gitlab/-/tree/master/doc/.vale/gitlab)
-- [`gitlab-development-kit`](https://gitlab.com/gitlab-org/gitlab-development-kit/-/tree/master/doc/.vale/gitlab)
+- [`gitlab-development-kit`](https://gitlab.com/gitlab-org/gitlab-development-kit/-/tree/main/doc/.vale/gitlab)
 
 This configuration is also used in build pipelines, where
 [error-level rules](#vale-result-types) are enforced.

doc/user/application_security/dast/index.md

@@ -1389,7 +1389,7 @@ The JSON report artifacts are not a public API of DAST and their format is expec
 
 The DAST tool always emits a JSON report file called `gl-dast-report.json` and
 sample reports can be found in the
-[DAST repository](https://gitlab.com/gitlab-org/security-products/dast/-/tree/master/test/end-to-end/expect).
+[DAST repository](https://gitlab.com/gitlab-org/security-products/dast/-/tree/main/test/end-to-end/expect).
 
 ## Optimizing DAST