Clarify how roles typecheck in Metamodel::TypePretense

Author: Kaiepi

doc/Type/Metamodel/TypePretense.pod6

@@ -9,8 +9,8 @@
 I<Warning>: this role is part of the Rakudo implementation, and is not
 a part of the language specification.
 
-Roles can type-check as C<Mu>, C<Any>, and C<Cool>, but don't actually
-have these classes as parents:
+Any role will type-check as C<Mu>, C<Any>, and C<Cool>, but don't
+actually have these classes as parents:
 
 =begin code
 class Class { }