Fix class name typo typo in perlootut example

ilmari · ilmari · commit 31f7d6b96b4a · 2016-05-24T11:25:49.000+01:00
It's spelled correctly in the body text, but the code had it wrong.
diff --git a/pod/perlootut.pod b/pod/perlootut.pod
@@ -505,7 +505,7 @@ new C<File>.
 
 C<Moose> lets you define roles the same way you define classes:
 
-  package HasOnOfSwitch;
+  package HasOnOffSwitch;
   use Moose::Role;
 
   has is_on => (
