Improve container registry API docs

doc/administration/packages/container_registry.md

@@ -609,7 +609,7 @@ of removing unused tags. Currently, this is exposed using the API, but in the fu
 these controls will be migrated to the GitLab interface.
 
 Project maintainers can
-[delete Container Registry tags in bulk](../../api/container_registry.md#delete-repository-tags-in-bulk)
+[delete Container Registry tags in bulk](../../api/container_registry.md#delete-registry-repository-tags-in-bulk)
 periodically based on their own criteria, however, this alone does not recycle data,
 it only unlinks tags from manifests and image blobs. To recycle the Container
 Registry data in the whole GitLab instance, you can use the built-in command

doc/api/container_registry.md

@@ -129,7 +129,7 @@ DELETE /projects/:id/registry/repositories/:repository_id
 curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab.example.com/api/v4/projects/5/registry/repositories/2"
 ```
 
-## List repository tags
+## List registry repository tags
 
 ### Within a project
 
@@ -165,7 +165,7 @@ Example response:
 ]
 ```
 
-## Get details of a repository tag
+## Get details of a registry repository tag
 
 Get details of a registry repository tag.
 
@@ -198,7 +198,7 @@ Example response:
 }
 ```
 
-## Delete a repository tag
+## Delete a registry repository tag
 
 Delete a registry repository tag.
 
@@ -219,9 +219,9 @@ curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" "https://git
 This action does not delete blobs. In order to delete them and recycle disk space,
 [run the garbage collection](https://docs.gitlab.com/omnibus/maintenance/README.html#removing-unused-layers-not-referenced-by-manifests).
 
-## Delete repository tags in bulk
+## Delete registry repository tags in bulk
 
-Delete repository tags in bulk based on given criteria.
+Delete registry repository tags in bulk based on given criteria.
 
 ```
 DELETE /projects/:id/registry/repositories/:repository_id/tags
@@ -231,7 +231,7 @@ DELETE /projects/:id/registry/repositories/:repository_id/tags
 | --------- | ---- | -------- | ----------- |
 | `id`      | integer/string | yes | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) owned by the authenticated user. |
 | `repository_id` | integer | yes | The ID of registry repository. |
-| `name_regex` | string | yes | The regex of the name to delete. To delete all tags specify `.*`. |
+| `name_regex` | string | yes | The [re2](https://github.com/google/re2/wiki/Syntax) regex of the name to delete. To delete all tags specify `.*`.|
 | `keep_n` | integer | no | The amount of latest tags of given name to keep. |
 | `older_than` | string | no | Tags to delete that are older than the given time, written in human readable form `1h`, `1d`, `1month`. |