Update gitlab-runner links to main in docs

In https://gitlab.com/gitlab-org/gitlab-runner/-/issues/27239 the
default branch of GitLab Runner is going to change to `main` which
already exists and being kept in sync with `master` until the full
migration is done.

In some cases I've added `/-/` path seperator to use the new URL
structure in GitLab.

reference https://gitlab.com/gitlab-org/gitlab-runner/-/issues/27239

doc/development/documentation/index.md

@@ -28,7 +28,7 @@ The source of the documentation exists within the codebase of each GitLab applic
 | Project | Path |
 | --- | --- |
 | [GitLab](https://gitlab.com/gitlab-org/gitlab/) | [`/doc`](https://gitlab.com/gitlab-org/gitlab/tree/master/doc) |
-| [GitLab Runner](https://gitlab.com/gitlab-org/gitlab-runner/) | [`/docs`](https://gitlab.com/gitlab-org/gitlab-runner/tree/master/docs) |
+| [GitLab Runner](https://gitlab.com/gitlab-org/gitlab-runner/) | [`/docs`](https://gitlab.com/gitlab-org/gitlab-runner/-/tree/main/docs) |
 | [Omnibus GitLab](https://gitlab.com/gitlab-org/omnibus-gitlab/) | [`/doc`](https://gitlab.com/gitlab-org/omnibus-gitlab/tree/master/doc) |
 | [Charts](https://gitlab.com/gitlab-org/charts/gitlab) | [`/doc`](https://gitlab.com/gitlab-org/charts/gitlab/tree/master/doc) |
 

doc/development/documentation/site_architecture/global_nav.md

@@ -275,11 +275,11 @@ The global nav contains links from all [four upstream projects](index.md#archite
 The [global nav URL](#urls) has a different prefix depending on the documentation file you change.
 
 | Repository                                                     | Link prefix | Final URL                          |
-|----------------------------------------------------------------|-------------|-----------|
-| <https://gitlab.com/gitlab-org/gitlab/tree/master/doc>         | `ee/`       |`https://docs.gitlab.com/ee/`      |
-| <https://gitlab.com/gitlab-org/omnibus-gitlab/tree/master/doc> | `omnibus/`  |`https://docs.gitlab.com/omnibus/` |
-| <https://gitlab.com/gitlab-org/gitlab-runner/tree/master/docs> | `runner/`   |`https://docs.gitlab.com/runner/`  |
-| <https://gitlab.com/charts/gitlab/tree/master/doc>             | `charts/`   |`https://docs.gitlab.com/charts/`  |
+|----------------------------------------------------------------|-------------|------------------------------------|
+| <https://gitlab.com/gitlab-org/gitlab/tree/master/doc>         | `ee/`       | `https://docs.gitlab.com/ee/`      |
+| <https://gitlab.com/gitlab-org/omnibus-gitlab/tree/master/doc> | `omnibus/`  | `https://docs.gitlab.com/omnibus/` |
+| <https://gitlab.com/gitlab-org/gitlab-runner/-/tree/main/docs> | `runner/`   | `https://docs.gitlab.com/runner/`  |
+| <https://gitlab.com/charts/gitlab/tree/master/doc>             | `charts/`   | `https://docs.gitlab.com/charts/`  |
 
 ### CSS classes
 

doc/development/documentation/site_architecture/index.md

@@ -51,7 +51,7 @@ product, and all together are pulled to generate the docs website:
 
 - [GitLab](https://gitlab.com/gitlab-org/gitlab/tree/master/doc)
 - [Omnibus GitLab](https://gitlab.com/gitlab-org/omnibus-gitlab/tree/master/doc)
-- [GitLab Runner](https://gitlab.com/gitlab-org/gitlab-runner/tree/master/docs)
+- [GitLab Runner](https://gitlab.com/gitlab-org/gitlab-runner/-/tree/main/docs)
 - [GitLab Chart](https://gitlab.com/charts/gitlab/tree/master/doc)
 
 NOTE:

doc/development/documentation/testing.md

@@ -20,7 +20,7 @@ For the specifics of each test run in our CI/CD pipelines, see the configuration
 in the relevant projects:
 
 - <https://gitlab.com/gitlab-org/gitlab/-/blob/master/.gitlab/ci/docs.gitlab-ci.yml>
-- <https://gitlab.com/gitlab-org/gitlab-runner/-/blob/master/.gitlab/ci/docs.gitlab-ci.yml>
+- <https://gitlab.com/gitlab-org/gitlab-runner/-/blob/main/.gitlab/ci/docs.gitlab-ci.yml>
 - <https://gitlab.com/gitlab-org/omnibus-gitlab/-/blob/master/gitlab-ci-config/gitlab-com.yml>
 - <https://gitlab.com/gitlab-org/charts/gitlab/-/blob/master/.gitlab-ci.yml>
 
@@ -178,7 +178,7 @@ documentation directory of projects.
 You can find Vale configuration in the following projects:
 
 - [`gitlab`](https://gitlab.com/gitlab-org/gitlab/-/tree/master/doc/.vale/gitlab)
-- [`gitlab-runner`](https://gitlab.com/gitlab-org/gitlab-runner/-/tree/master/docs/.vale/gitlab)
+- [`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)

doc/user/clusters/applications.md

@@ -1175,7 +1175,7 @@ before deploying one.
 
 The [`runner/gitlab-runner`](https://gitlab.com/gitlab-org/charts/gitlab-runner)
 chart is used to install this application, using
-[a preconfigured `values.yaml`](https://gitlab.com/gitlab-org/charts/gitlab-runner/-/blob/master/values.yaml)
+[a preconfigured `values.yaml`](https://gitlab.com/gitlab-org/charts/gitlab-runner/-/blob/main/values.yaml)
 file. Customizing the installation by modifying this file is not supported. This
 also means you cannot modify `config.toml` file for this Runner. If you want to
 have that possibility and still deploy Runner in Kubernetes, consider using the