Merge branch 'pass-allow-failure-to-docs-review-jobs' into 'master'

Pass allow_failure: true option to the review jobs for docs

See merge request gitlab-org/gitlab!24552

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

@@ -50,6 +50,7 @@
     - <<: *if-canonical-dot-com-gitlab-org-groups-merge-request
       changes: *code-docs-patterns
       when: manual
+  allow_failure: true
   image: ruby:2.6-alpine
   stage: review
   dependencies: []