Fix issue with $/.html being attempted to be created

Author: Mouq

htmlify.p6

@@ -530,7 +530,7 @@ sub write-disambiguation-files($dr) {
                 });
         }
         my $html = p2h($pod, 'routine');
-        spurt "html/$name.html", $html;
+        spurt "html/$name.subst(/<[:/\]>/,'_').html", $html;
     }
     say '';
 }

lib/Language/objects.pod

@@ -447,7 +447,7 @@ instances, and roles are meant for managing behavior and code reuse.
 Roles are immutable as soon as the compiler parses the closing bracket of the
 role declaration.
 
-=head2 Role Application
+=head2 Z<>Role Application
 
 Role application differs significantly from class inheritance. When a role
 is applied to a class, the methods of that role are copied into the class.