Document ExtraRule properly

Emby.Naming/Video/ExtraRule.cs

@@ -5,30 +5,29 @@ using MediaType = Emby.Naming.Common.MediaType;
 
 namespace Emby.Naming.Video
 {
+    /// <summary>
+    /// A rule used to match a file path with an <see cref="MediaBrowser.Model.Entities.ExtraType"/>.
+    /// </summary>
     public class ExtraRule
     {
         /// <summary>
-        /// Gets or sets the token.
+        /// Gets or sets the token to use for matching against the file path.
         /// </summary>
-        /// <value>The token.</value>
         public string Token { get; set; }
 
         /// <summary>
-        /// Gets or sets the type of the extra.
+        /// Gets or sets the type of the extra to return when matched.
         /// </summary>
-        /// <value>The type of the extra.</value>
         public ExtraType ExtraType { get; set; }
 
         /// <summary>
         /// Gets or sets the type of the rule.
         /// </summary>
-        /// <value>The type of the rule.</value>
         public ExtraRuleType RuleType { get; set; }
 
         /// <summary>
-        /// Gets or sets the type of the media.
+        /// Gets or sets the type of the media to return when matched.
         /// </summary>
-        /// <value>The type of the media.</value>
         public MediaType MediaType { get; set; }
     }
 }