Use a special name for update default branch on repository setting (#15893)

options/locale/locale_en-US.ini

@@ -1550,6 +1550,7 @@ settings.email_notifications.disable = Disable Email Notifications
 settings.email_notifications.submit = Set Email Preference
 settings.site = Website
 settings.update_settings = Update Settings
+settings.branches.update_default_branch = Update Default Branch
 settings.advanced_settings = Advanced Settings
 settings.wiki_desc = Enable Repository Wiki
 settings.use_internal_wiki = Use Built-In Wiki

templates/repo/settings/branches.tmpl

@@ -35,7 +35,7 @@
 								{{end}}
 							</div>
 						</div>
-						<button class="ui green button">{{$.i18n.Tr "repo.settings.update_settings"}}</button>
+						<button class="ui green button">{{$.i18n.Tr "repo.settings.branches.update_default_branch"}}</button>
 					</div>
 					{{end}}
 				</form>