Fix up a few URLs pointing to GitLab UI

These URLs were pointing towards the master branch, as it has been
renamed to main, we need to update the URLs

Additionally adding `/-/` to some more URLs pointing to
`gitlab-org/gitlab`.

app/assets/javascripts/monitoring/constants.js

@@ -151,7 +151,7 @@ export const linkTypes = {
  * chart legend layout.
  *
  * Currently defined in
- * https://gitlab.com/gitlab-org/gitlab-ui/-/blob/master/src/utils/charts/constants.js
+ * https://gitlab.com/gitlab-org/gitlab-ui/-/blob/main/src/utils/charts/constants.js
  *
  */
 export const legendLayoutTypes = {

doc/development/fe_guide/style/scss.md

@@ -20,15 +20,17 @@ In order to reduce the generation of more CSS as our site grows, prefer the use
 
 #### Where are utility classes defined?
 
-Prefer the use of [utility classes defined in GitLab UI](https://gitlab.com/gitlab-org/gitlab-ui/-/blob/master/doc/css.md#utilities). An easy list of classes can also be [seen on Unpkg](https://unpkg.com/browse/@gitlab/ui/src/scss/utilities.scss).
+Prefer the use of [utility classes defined in GitLab UI](https://gitlab.com/gitlab-org/gitlab-ui/-/blob/main/doc/css.md#utilities).
+An easy list of classes can also be [seen on Unpkg](https://unpkg.com/browse/@gitlab/ui/src/scss/utilities.scss).
 
-Classes in [`utilities.scss`](https://gitlab.com/gitlab-org/gitlab/blob/master/app/assets/stylesheets/utilities.scss) and [`common.scss`](https://gitlab.com/gitlab-org/gitlab/blob/master/app/assets/stylesheets/framework/common.scss) are being deprecated. Classes in [`common.scss`](https://gitlab.com/gitlab-org/gitlab/blob/master/app/assets/stylesheets/framework/common.scss) that use non-design system values should be avoided in favor of conformant values.
+Classes in [`utilities.scss`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/assets/stylesheets/utilities.scss) and [`common.scss`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/assets/stylesheets/framework/common.scss) are being deprecated.
+Classes in [`common.scss`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/assets/stylesheets/framework/common.scss) that use non-design system values should be avoided in favor of conformant values.
 
 Avoid [Bootstrap's Utility Classes](https://getbootstrap.com/docs/4.3/utilities/).
 
 NOTE:
 While migrating [Bootstrap's Utility Classes](https://getbootstrap.com/docs/4.3/utilities/)
-to the [GitLab UI](https://gitlab.com/gitlab-org/gitlab-ui/-/blob/master/doc/css.md#utilities)
+to the [GitLab UI](https://gitlab.com/gitlab-org/gitlab-ui/-/blob/main/doc/css.md#utilities)
 utility classes, note both the classes for margin and padding differ. The size scale used at
 GitLab differs from the scale used in the Bootstrap library. For a Bootstrap padding or margin
 utility, you may need to double the size of the applied utility to achieve the same visual
@@ -36,9 +38,9 @@ result (such as `ml-1` becoming `gl-ml-2`).
 
 #### Where should I put new utility classes?
 
-If a class you need has not been added to GitLab UI, you get to add it! Follow the naming patterns documented in the [utility files](https://gitlab.com/gitlab-org/gitlab-ui/-/tree/master/src/scss/utility-mixins) and refer to [GitLab UI's CSS documentation](https://gitlab.com/gitlab-org/gitlab-ui/-/blob/master/doc/contributing/adding_css.md#adding-utility-mixins) for more details, especially about adding responsive and stateful rules.
+If a class you need has not been added to GitLab UI, you get to add it! Follow the naming patterns documented in the [utility files](https://gitlab.com/gitlab-org/gitlab-ui/-/tree/main/src/scss/utility-mixins) and refer to [GitLab UI's CSS documentation](https://gitlab.com/gitlab-org/gitlab-ui/-/blob/main/doc/contributing/adding_css.md#adding-utility-mixins) for more details, especially about adding responsive and stateful rules.
 
-If it is not possible to wait for a GitLab UI update (generally one day), add the class to [`utilities.scss`](https://gitlab.com/gitlab-org/gitlab/blob/master/app/assets/stylesheets/utilities.scss) following the same naming conventions documented in GitLab UI. A follow—up issue to backport the class to GitLab UI and delete it from GitLab should be opened.
+If it is not possible to wait for a GitLab UI update (generally one day), add the class to [`utilities.scss`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/assets/stylesheets/utilities.scss) following the same naming conventions documented in GitLab UI. A follow—up issue to backport the class to GitLab UI and delete it from GitLab should be opened.
 
 #### When should I create component classes?