Replace british spelling

Author: olijeffers0n

docs/paper/dev/api/mob-goals.md

@@ -5,7 +5,7 @@ description: A guide to the mob goal API.
 
 # Mob Goal API
 
-The Mob Goal API is a way of controlling the behaviour of mobs in Minecraft. It allows you to set a goal for a mob to perform, such as
+The Mob Goal API is a way of controlling the behavior of mobs in Minecraft. It allows you to set a goal for a mob to perform, such as
 attacking a player, or moving to a location. It also allows you to create your own custom goals.
 
 ## Registering a Goal on an Entity