Better comments

doc.zih.tu-dresden.de/mkdocs.yml

@@ -228,13 +228,14 @@ plugins:
       # True by default
       # Toggle via env. var. ENABLED_HTMLPROOFER=false
       enabled: !ENV [ENABLED_HTMLPROOFER, True]
-      # Check URLs before serving. Build fails in case of bad URLs.
+      # Check URLs before serving. Raise error and fail build at first bad URL.
       # raise_error: !ENV [ENABLED_HTMLPROOFER_RE, False]
-      # raise_error_after_finish: True
+      # Raise error and fail build after all URLs have been checked.
+      raise_error_after_finish: True
       # Ignore errors
       #raise_error_excludes:
       #  504: ['https://www.mkdocs.org/']
-      #          405: ['https://jupyterhub.hpc.tu-dresden.de/']
+      #  405: ['https://jupyterhub.hpc.tu-dresden.de/']
       ignore_urls:
           - mailto:hpc-support@tu-dresden.de
           - https://jupyterhub.hpc.tu-dresden.de/*