Fix UI for closed MR when source project is removed

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

app/views/projects/merge_requests/_mr_title.html.haml

@@ -3,7 +3,7 @@
 
 - if @merge_request.closed_without_fork?
   .alert.alert-danger
-    %p The source project of this merge request has been removed.
+    The source project of this merge request has been removed.
 
 .detail-page-header
   .detail-page-header-body

changelogs/unreleased/58797-broken-ui-on-a-closed-merge-request-from-a-deleted-source-project.yml

+---
+title: Fix UI for closed MR when source project is removed
+merge_request: 25967
+author: Takuya Noguchi
+type: fixed