Merge branch 'docs-update-vale-2.4.0' into 'master'

Update vale in docs-lint to 2.4.0 image

See merge request gitlab-org/gitlab!44108

.gitlab/ci/docs.gitlab-ci.yml

@@ -42,7 +42,7 @@ docs lint:
   extends:
     - .default-retry
     - .docs:rules:docs-lint
-  image: "registry.gitlab.com/gitlab-org/gitlab-docs/lint:vale-2.3.4-markdownlint-0.23.2"
+  image: "registry.gitlab.com/gitlab-org/gitlab-docs/lint:vale-2.4.0-markdownlint-0.23.2"
   stage: test
   needs: []
   script:

doc/ci/yaml/README.md

@@ -1544,8 +1544,8 @@ docker build:
       # - when: never would be redundant here, this is implied any time rules are listed.
 ```
 
-Keywords such as `branches` or `refs` that are currently available for
-`only`/`except` are not yet available in `rules` as they are being individually
+Keywords such as `branches` or `refs` that are available for
+`only`/`except` are not available in `rules`. They are being individually
 considered for their usage and behavior in this context. Future keyword improvements
 are being discussed in our [epic for improving `rules`](https://gitlab.com/groups/gitlab-org/-/epics/2783),
 where anyone can add suggestions or requests.