Rename hex:match -> hex:matches for consistency with unit and side mo…

…dules

data/lua/core.lua

@@ -736,7 +736,7 @@ if wesnoth.kernel_type() == "Game Lua Kernel" then
 		return wesnoth.map.get_label(self.x, self.y, who)
 	end
 
-	function hex_mt:match(filter)
+	function hex_mt:matches(filter)
 		return wesnoth.map.matches_location(self.x, self.y, filter)
 	end