Clarify a confusing point in the docs about alias paths

svn path=/icecast/trunk/icecast/; revision=12593

doc/icecast2_config_file.html

@@ -584,7 +584,7 @@ This specifies that the named mount point will require listener authentication.
         <alias source="/foo" dest="/bar"/>
     </paths>
 </pre>
-<p>This section contains paths which are used for various things within icecast.  All paths should not end in a '/'.
+<p>This section contains paths which are used for various things within icecast.  All paths (other than any aliases) should not end in a '/'.
 </p>
 <h4>basedir</h4>
 <div class="indentedbox">