Add xmldoc to enum

osu.Framework/Threading/ScheduledDelegate.cs

···
             }
         }
 
+        /// <summary>
+        /// The current state of a scheduled delegate.
+        /// </summary>
         public enum RunState
         {
+            /// <summary>
+            /// Waiting to run. Potentially not the first run if on a repeating schedule.
+            /// </summary>
             Waiting,
+
+            /// <summary>
+            /// Currently running.
+            /// </summary>
             Running,
+
+            /// <summary>
+            /// Running completed for a final time.
+            /// </summary>
             Complete,
+
+            /// <summary>
+            /// Task manually cancelled.
+            /// </summary>
             Cancelled
         }
     }