noLink -> addLink

Replace the variable "noLink" by "addLink". This saves you the
two seconds for thinking about the multiple negation
`#unless noLink #else ..`. `#if addLink #else ..` is more
readily grasped.
You just rewrapped the text? Please don't do that because it is hard to know what changed and what not. If you want code style changes, then create a separate pull request with only those. In that pull request you don't change any logic, just change the style, so it is easier to review. And on the other hand, it is then easier to code review this, because you know that anything which changed also changed in logic.