Show correct naming for 1 comment (go-gitea#25704) (go-gitea#25712)

Backport go-gitea#25704 by @earl-warren

- Resolves https://codeberg.org/forgejo/forgejo/issues/948

Co-authored-by: Earl Warren <109468362+earl-warren@users.noreply.github.com>
Co-authored-by: Gusted <postmaster@gusted.xyz>

Author: 3 people

options/locale/locale_en-US.ini

@@ -1430,6 +1430,7 @@ issues.next = Next
 issues.open_title = Open
 issues.closed_title = Closed
 issues.draft_title = Draft
+issues.num_comments_1 = %d comment
 issues.num_comments = %d comments
 issues.commented_at = `commented <a href="#%s">%s</a>`
 issues.delete_comment_confirm = Are you sure you want to delete this comment?

templates/repo/issue/view_title.tmpl

@@ -111,7 +111,7 @@
 						{{$.locale.Tr "repo.issues.opened_by_fake" $createdStr (.Issue.Poster.GetDisplayName|Escape) | Safe}}
 					{{end}}
 					·
-					{{$.locale.Tr "repo.issues.num_comments" .Issue.NumComments}}
+					{{$.locale.TrN .Issue.NumComments "repo.issues.num_comments_1" "repo.issues.num_comments" .Issue.NumComments}}
 				</span>
 			{{end}}
 		</div>