Merge branch 'docs/update-yaml-anchors-for-scripts' into 'master'

Fix typo in YAML anchors for scripts example

See merge request gitlab-org/gitlab!47599

doc/ci/yaml/README.md

@@ -4257,7 +4257,7 @@ job_name:
     - *some-script-before
   script:
     - *some-script
-  before_script:
+  after_script:
     - *some-script-after
 ```