Add monster-teleporting to resource file.

This should have been part of commit 511d16f, but apparently I forgot to
stage the file.

Whoops.

src/main/resources/res/settings.yml

@@ -15,6 +15,7 @@ require-empty-inv-spec: false
 pvp-enabled: false
 monster-infight: false
 allow-teleporting: false
+monster-teleporting: false
 spectate-on-death: true
 auto-leave-on-end: false
 share-items-in-arena: true