Update QA failure issue template to include test case link

.gitlab/issue_templates/QA Failure.md

@@ -11,11 +11,16 @@ The issue should have the following:
 - A link to the failing job.
 - The stack trace from the job's logs in the "Stack trace" section below.
 - A screenshot (if available), and HTML capture (if available), in the "Screenshot / HTML page" section below.
+- A link to the corresponding test case(s) in the summary.
 --->
 
 ### Summary
 
+Failing job(s):
 
+Failing spec(s):
+
+Corresponding test case(s):
 
 ### Stack trace