Updated documentation comments for Presence#SyncComplete property

src/IO.Ably.Shared/Realtime/Presence.cs

@@ -39,15 +39,15 @@ internal Presence(IConnectionManager connection, RealtimeChannel channel, string
         internal ILogger Logger { get; private set; }
 
         /// <summary>
-        /// Has the sync completed.
+        /// Checks if presence sync has ended.
         /// RTP13
         /// </summary>
         ///
         [Obsolete("This property is deprecated, use SyncComplete instead")]
         public bool IsSyncComplete => SyncComplete;
 
         /// <summary>
-        /// Checks if sync has completed
+        /// Checks if presence sync has ended.
         /// RTP13
         /// </summary>
         ///