Merge branch 'ux-guide-update-mr-copy' into 'master'

Add Approve and Remove approval to UX Guide terminology table

Updating UX Guide page on terminology to include guidance on 'Approve' and 'Remove approval'.

See merge request !7632

doc/development/ux_guide/copy.md

@@ -96,4 +96,6 @@ The form should be titled `Edit issue`. The submit button should be labeled `Sav
 | Add | Add a merge request | Do not use `create` or `new` |
 | View | View an open or merged merge request ||
 | Edit | Edit an open or merged merge request| Do not use `update` |
+| Approve | Approve an open merge request ||
+| Remove approval, unapproved | Remove approval of an open merge request | Do not use `unapprove` as that is not an English word|
 | Merge | Merge an open merge request ||