Add & fix crefs in XML document comments

* Add references to types where they are missing.

 * Fix incorrect references to closed generic types.

 * Convert member ID strings to proper references where they can be
   converted without breaking the build. The remaining member ID
   strings usually mean that the comment would have to be rephrased
   for at least one build target / platform.

 * Drop namespaces from type names where they are unnecessary.

 * Fix the odd typo and add additional <c> markup in a few places.

Src/Newtonsoft.Json/Serialization/NamingStrategy.cs

@@ -22,7 +22,7 @@
         /// Gets the serialized name for a given property name.
         /// </summary>
         /// <param name="name">The initial property name.</param>
-        /// <param name="hasSpecifiedName">A flag indicating whether the property has had a name explicitly specfied.</param>
+        /// <param name="hasSpecifiedName">A flag indicating whether the property has had a name explicitly specified.</param>
         /// <returns>The serialized property name.</returns>
         public virtual string GetPropertyName(string name, bool hasSpecifiedName)
         {