Update MediaBrowser.Api/DisplayPreferencesService.cs

Co-authored-by: Cody Robibero <cody@robibe.ro>

MediaBrowser.Api/DisplayPreferencesService.cs

@@ -52,7 +52,7 @@ namespace MediaBrowser.Api
     public class DisplayPreferencesService : BaseApiService
     {
         /// <summary>
-        /// The user manager.
+        /// The display preferences manager.
         /// </summary>
         private readonly IDisplayPreferencesManager _displayPreferencesManager;