Rename #qa slack channel to #quality in docs

doc/development/testing_guide/end_to_end_tests.md

@@ -67,9 +67,9 @@ and examples in [the `qa/` directory][instance-qa-examples].
 
 ## Where can I ask for help?
 
-You can ask question in the `#qa` channel on Slack (GitLab internal) or you can
-find an issue you would like to work on in [the issue tracker][gitlab-qa-issues]
-and start a new discussion there.
+You can ask question in the `#quality` channel on Slack (GitLab internal) or
+you can find an issue you would like to work on in
+[the issue tracker][gitlab-qa-issues] and start a new discussion there.
 
 [omnibus-gitlab]: https://gitlab.com/gitlab-org/omnibus-gitlab
 [gitlab-qa]: https://gitlab.com/gitlab-org/gitlab-qa

qa/qa/page/README.md

@@ -115,8 +115,8 @@ from within the `qa` directory.
 
 ## Where to ask for help?
 
-If you need more information, ask for help on `#qa` channel on Slack (GitLab
-Team only).
+If you need more information, ask for help on `#quality` channel on Slack
+(internal, GitLab Team only).
 
 If you are not a Team Member, and you still need help to contribute, please
 open an issue in GitLab QA issue tracker.

qa/qa/scenario/test/sanity/selectors.rb

@@ -31,7 +31,7 @@ module QA
                 current changes in this merge request.
 
                 For more help see documentation in `qa/page/README.md` file or
-                ask for help on #qa channel on Slack (GitLab Team only).
+                ask for help on #quality channel on Slack (GitLab Team only).
 
                 If you are not a Team Member, and you still need help to
                 contribute, please open an issue in GitLab QA issue tracker.