typo

src/tilemapper/battlemap.py

@@ -31,7 +31,7 @@ class BattleMap(BattleMapType):
     Example Usage:
 
         >>> console = TileSetManager().load("colorized")
-        >>> bmap = BattleMap("input.txt", tileset=console)
+        >>> bmap = BattleMap("input.toml", tileset=console)
         >>> print(bmap.as_string())
 
     """