fix typo when asking for validation comment (#68504)

git_redmine.py

@@ -302,7 +302,7 @@ def validate(issue):
     if issue.status.id != api.solution.id:
         click.secho('Issue %s has no solution proposed.' % issue.id, fg='red')
         return False
-    comment = get_comment('Do you want to add a coment to your validation?')
+    comment = get_comment('Do you want to add a comment to your validation?')
     kwargs = {}
     if comment:
         kwargs['notes'] = comment