Merge pull request #988 from VynceMontgomery/patch-2

minor wording fix

doc/Language/classtut.pod6

@@ -269,7 +269,7 @@ The method itself takes the passed parameter – which must be an instance of
 the C<Task> class – and C<push>es it onto the invocant's C<@!dependencies>
 attribute.
 
-The second method contains the main logic of the dependency handler:
+The C<perform> method contains the main logic of the dependency handler:
 
     method perform() {
         unless $!done {