Fix mattermost external link

5 jobs for 8-14-1-release-post in 13 minutes and 41 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Build
passed #6749696
docker
build

00:10:52

passed #6749583
docker
lint

00:01:26

failed #6749584
docker
build

00:04:05

 
  Deploy
passed #6749585
deploy review-apps
review

00:01:07

passed #6749586
deploy review-apps manual
review_stop

00:00:15