Update default keyword and adjust yaml reference

doc/ci/jobs/index.md

@@ -82,6 +82,20 @@ For example:
 
 ![Pipeline mini graph sorting](img/pipelines_mini_graph_sorting.png)
 
+## Unavailable names for jobs
+
+You can't use these keywords as job names:
+
+- `image`
+- `services`
+- `stages`
+- `types`
+- `before_script`
+- `after_script`
+- `variables`
+- `cache`
+- `include`
+
 ## Group jobs in a pipeline
 
 If you have many similar jobs, your [pipeline graph](../pipelines/index.md#visualize-pipelines) becomes long and hard

doc/ci/quick_start/index.md

@@ -141,7 +141,7 @@ The pipeline starts when the commit is committed.
 - You can also use [CI/CD configuration visualization](../pipeline_editor/index.md#visualize-ci-configuration) to
   view a graphical representation of your `.gitlab-ci.yml` file.
 - Each job contains scripts and stages:
-  - The [`default`](../yaml/index.md#custom-default-keyword-values) keyword is for
+  - The [`default`](../yaml/index.md#default) keyword is for
     custom defaults, for example with [`before_script`](../yaml/index.md#before_script)
     and [`after_script`](../yaml/index.md#after_script).
   - [`stage`](../yaml/index.md#stage) describes the sequential execution of jobs.

doc/ci/yaml/includes.md

@@ -69,7 +69,7 @@ You can include an array of configuration files:
 
 ## Use `default` configuration from an included configuration file
 
-You can define a [`default`](index.md#custom-default-keyword-values) section in a
+You can define a [`default`](index.md#default) section in a
 configuration file. When you use a `default` section with the `include` keyword, the defaults apply to
 all jobs in the pipeline.
 

doc/ci/yaml/script.md

@@ -62,7 +62,7 @@ job:
 ## Set a default `before_script` or `after_script` for all jobs
 
 You can use [`before_script`](index.md#before_script) and [`after_script`](index.md#after_script)
-with [`default`](index.md#custom-default-keyword-values):
+with [`default`](index.md#default):
 
 - Use `before_script` with `default` to define a default array of commands that
   should run before the `script` commands in all jobs.

doc/development/cicd/templates.md

@@ -60,7 +60,7 @@ don't have any other `.gitlab-ci.yml` files.
 When authoring pipeline templates:
 
 - Place any [global keywords](../../ci/yaml/index.md#global-keywords) like `image`
-  or `before_script` in a [`default`](../../ci/yaml/index.md#custom-default-keyword-values)
+  or `before_script` in a [`default`](../../ci/yaml/index.md#default)
   section at the top of the template.
 - Note clearly in the [code comments](#explain-the-template-with-comments) if the
   template is designed to be used with the `includes` keyword in an existing
@@ -77,7 +77,7 @@ other pipeline configuration.
 
 When authoring job templates:
 
-- Do not use [global](../../ci/yaml/index.md#global-keywords) or [`default`](../../ci/yaml/index.md#custom-default-keyword-values)
+- Do not use [global](../../ci/yaml/index.md#global-keywords) or [`default`](../../ci/yaml/index.md#default)
   keywords. When a root `.gitlab-ci.yml` includes a template, global or default keywords
   might be overridden and cause unexpected behavior. If a job template requires a
   specific stage, explain in the code comments that users must manually add the stage