Please add some protection to the wiki pages

[donnykurnia]

I encounter warning on my computer and it has a link to https://github.com/guard/listen/wiki/Increasing-the-amount-of-inotify-watchers

When I visit the page, the content has been replaced by someone else. I have managed to revert the page content into the last revision.

This wiki page is important and should be protected from further vandal or unauthorized edit by non-contributor.

[rymai]

@donnykurnia Done, thanks!