L.Class usage example Said L.Class where it should've said MyClass

Usage example for L.Class options mechanism should refer to MyChildClass inheriting from MyClass instead of MyChildClass inheriting from L.Class directly.

reference.html

@@ -5069,7 +5069,7 @@ a.greet('Jason'); // alerts "Yo, bro Jason!"</code></pre>
 	}
 });
 
-var MyChildClass = L.Class.extend({
+var MyChildClass = MyClass.extend({
 	options: {
 		myOption1: 'baz',
 		myOption3: 5