Fix indentation issue (#21802)

There is an indentation issue in PR #21757. This PR addresses this issue.

Author: yutongzhang-microsoft

.azure-pipelines/docker-sonic-mgmt-py3-only.yml

@@ -42,7 +42,7 @@ stages:
     - script: |
         set -x
         sudo setfacl -R -b $(Agent.BuildDirectory)
-        displayName: 'setfacl'
+      displayName: 'setfacl'
 
     - bash: |
         set -xe