Add hint for troubleshooting MS Word previews

config/config.sample.php

@@ -669,6 +669,10 @@ $CONFIG = array(
  *  - OC\Preview\StarOffice
  *  - OC\Preview\SVG
  *  - OC\Preview\TIFF
+ * 
+ * .. note:: Troubleshooting steps for the MS Word previews are available
+ *    at the :doc:`collaborative_documents_configuration#troubleshooting` section
+ *    of the Administrators Manual.
  *
  * The following providers are not available in Microsoft Windows:
  *