Rename reject to 'request changes' (go-gitea#5858)

* remame reject to 'request changes

* make usee of requested changes in issue's view content

Author: adelowo

options/locale/locale_en-US.ini

@@ -842,7 +842,7 @@ issues.review.self.rejection = You cannot request changes on your own pull reque
 issues.review.approve = "approved these changes %s"
 issues.review.comment = "reviewed %s"
 issues.review.content.empty = You need to leave a comment indicating the requested change(s).
-issues.review.reject = "rejected these changes %s"
+issues.review.reject = "requested these changes %s"
 issues.review.pending = Pending
 issues.review.review = Review
 issues.review.reviewers = Reviewers
@@ -1221,7 +1221,7 @@ diff.review.header = Submit review
 diff.review.placeholder = Review comment
 diff.review.comment = Comment
 diff.review.approve = Approve
-diff.review.reject = Reject
+diff.review.reject = Request changes
 
 releases.desc = Track project versions and downloads.
 release.releases = Releases