Fix warnings in MediaBrowser.Controller

MediaBrowser.Controller/Entities/IHasMediaSources.cs

@@ -20,6 +20,8 @@ namespace MediaBrowser.Controller.Entities
         /// <summary>
         /// Gets the media sources.
         /// </summary>
+        /// <param name="enablePathSubstitution"><c>true</c> to enable path substitution, <c>false</c> to not.</param>
+        /// <returns>A lits of media sources.</returns>
         List<MediaSourceInfo> GetMediaSources(bool enablePathSubstitution);
 
         List<MediaStream> GetMediaStreams();