Fix incorrect URL

Author: zoffixznet

doc/Language/typesystem.pod6

@@ -8,7 +8,7 @@
 
 A type defines a new object by creating a type object that provides an
 interface to create instances of objects or to check values against. Any type
-object is a subclass of L<Any|/type/Mu> or L<Mu|/type/Mu>. Introspection
+object is a subclass of L<Any|/type/Any> or L<Mu|/type/Mu>. Introspection
 methods are provided via inheritance from those base classes and the
 introspection postfix L<.^|/language/operators#postfix_.^>. A new type is
 introduced to the current scope by one of the following type declarators at