Fixing doc comment.

src/Microsoft.AspNet.Routing/Constraints/DateTimeRouteConstraint.cs

@@ -10,8 +10,13 @@ namespace Microsoft.AspNet.Routing.Constraints
 {
     /// <summary>
     /// Constrains a route parameter to represent only <see cref="DateTime"/> values.
-    /// Supports date time formats represented by CultureInfo.DateTimeFormat for the CultureInfo.InvariantCulture.
     /// </summary>
+    /// <remarks>
+    /// This constraint tries to parse strings by using all of the formats returned by the 
+    /// CultureInfo.InvariantCulture.DateTimeFormat.GetAllDateTimePatterns() method.
+    /// For a sample on how to list all formats which are considered, please visit
+    /// http://msdn.microsoft.com/en-us/library/aszyst2c(v=vs.110).aspx
+    /// </remarks>
     public class DateTimeRouteConstraint : IRouteConstraint
     {
         /// <inheritdoc />