DOC: Add example to loadfiles section

src/doc/utilities.rst

@@ -47,9 +47,15 @@ documentation), the LinkAhead Advanced User tools provide the
 `linkahead-loadfiles` executable. Both operate on a path as seen by
 the LinkAhead server (i.e., a path within the Docker container in the
 typical LinkAhead Control setup) and can be further specified to
-exclude or exclude specific files.
+exclude or exclude specific files. In the typical setup, where a
+directory is mounted as an extroot into the Docker container by
+LinkAhead control, running
 
-Execute
+.. code-block:: sh
+
+   linkahead-loadfiles /opt/caosdb/mnt/extroot
+
+makes all files available. Execute
 
 .. code-block:: sh