Fix quick submit button tooltip

This commit fixes a bug in quick_submit.js that caused the submit button
tooltip not to be rendered and an error to be printed to the browser
console.

app/assets/javascripts/behaviors/quick_submit.js

@@ -72,7 +72,7 @@ $(document).on(
 
     $this.tooltip({
       container: 'body',
-      html: 'true',
+      html: true,
       placement: 'top',
       title,
       trigger: 'manual',

changelogs/unreleased/nfriend-fix-quick-submit.yml

+---
+title: Fix submit button tooltips for forms with quick submit behavior
+merge_request: 39225
+author:
+type: fixed