Fixes #249 incorrect variable name

zoffixznet · zoffixznet · commit dc670e3ed467 · 2015-12-18T09:48:30.000-05:00
diff --git a/doc/Language/classtut.pod b/doc/Language/classtut.pod
@@ -360,7 +360,7 @@ handle default values too:
     has @!dependencies;
     has Bool ($.done, $.ready);
     submethod BUILD(
-            :@!callback,
+            :&!callback,
             :@!dependencies,
             :$!done = False,
             :$!ready = not @!dependencies
