[Wiki] Protect search page

Hi!

I dont know if this qualifies as a bug. But i feel this is somewhat important so…
you guys should prevent the wiki search page from being edited. (Link: https://wiki.unrealengine.com/Search)

Some minutes ago as i was looking for something i saw that someone (probably a bot) changed the search page.
I fixed this for now. To prevent future edits you should protect that page.