ci(docpublish): reword cli screenshot generation commit message

Author: Lee-W

.github/workflows/docspublish.yml

@@ -30,7 +30,7 @@ jobs:
           git config --global user.name "github-actions[bot]"
           git config --global user.email "github-actions[bot]@users.noreply.github.com"
           git add docs/images/cli_help
-          git commit -m "docs(cli/screenshots) update CLI screenshots" -m "[skip ci]"
+          git commit -m "docs(cli/screenshots): update CLI screenshots" -m "[skip ci]"
           git push
 
   publish-documentation: