Fix typo in RestClient.CookieContainer documentation.

"No bug left behind."

Author: aaronlerch

RestSharp/RestClient.cs

@@ -229,7 +229,7 @@ IDeserializer GetHandler(string contentType)
 		public bool FollowRedirects { get; set; }
 
 		/// <summary>
-		/// The CookieContainer used fo requests made by this client instance
+		/// The CookieContainer used for requests made by this client instance
 		/// </summary>
 		public CookieContainer CookieContainer { get; set; }