fix typo

Author: coke

doc/Type/Metamodel/CurriedRoleHOW.pod6

@@ -2,7 +2,7 @@
 
 =TITLE role Metamodel::CurriedRoleHOW
 
-=SUBTITLE Support for parametrized roles that have not been instantiated
+=SUBTITLE Support for parameterized roles that have not been instantiated
 
     class Metamodel::CurriedRoleHOW
         does Metamodel::Naming
@@ -29,7 +29,7 @@ instantiation of it. This meta-object represents those "partial types"
 as both a way to curry on your way to a full specialization, but also
 as a way to do type-checking or punning.
 
-This class will show up in parametrized roles. For instance:
+This class will show up in parameterized roles. For instance:
 
 =begin code
 role Zipi[::T] {