Fix de-lobby README.md (#789)

crates/lobby/README.md

@@ -1,8 +1,5 @@
 # Digital Extinction Lobby Server
 
-DE Lobby Server implements multiplayer game management functionality. It
-exposes a simple HTTP based API and a [hole
-punching](https://en.wikipedia.org/wiki/Hole_punching_(networking)) rendezvous.
-
-Full documentation is available here
-[docs.de-game.org/lobby/](https://docs.de-game.org/lobby/).
+DE Lobby Server implements multiplayer game management functionality. Full
+documentation is available here
+[docs.de-game.org/multiplayer/lobby](https://docs.de-game.org/multiplayer/lobby).