Update post-outage-checkup.md

fix url

Author: mtspn

openshift-201/post-outage-checkup.md

@@ -1,6 +1,6 @@
 # Post Outage Checkup
 
-[![Video Walkthrough Thumbnail](././images/post-outage-checkup/post-outage-checkup-thumb.png)](https://youtu.be/WfR6rKGzi7Q)
+[![Video Walkthrough Thumbnail](././images/post-outage-checkup/post-outage-checkup-thumb.png)]([https://youtu.be/WfR6rKGzi7Q](https://youtu.be/1_gUD1Q8qSw))
 
 [Video walkthrough](https://youtu.be/WfR6rKGzi7Q)