Correct .gitlab-ci.yml syntax

1 job for master in 7 seconds (queued for 92 minutes and 38 seconds)
Status Name Job ID Coverage
  Build
failed suse_tumbleweed_qt515 #131752
Linux

00:00:07

 
Name Stage Failure
failed
suse_tumbleweed_qt515 Build
Running with gitlab-runner 14.2.0 (58ba2b95)
on dalca1 3qCwj5zX

Preparing the "docker" executor
Using Docker executor with image kdeorg/suse-qt515:default ...
Pulling docker image kdeorg/suse-qt515:default ...

WARNING: Failed to pull image with policy "always": Error response from daemon: pull access denied for kdeorg/suse-qt515, repository does not exist or may require 'docker login': denied: requested access to the resource is denied (manager.go:205:0s)
ERROR: Job failed: failed to pull image "kdeorg/suse-qt515:default" with specified policies [always]: Error response from daemon: pull access denied for kdeorg/suse-qt515, repository does not exist or may require 'docker login': denied: requested access to the resource is denied (manager.go:205:0s)