Fix typo.

Author: GraylinKim

sc2reader/data/__init__.py

@@ -323,7 +323,7 @@ def add_unit_type(self, type_id, str_id, name, title=None, race='Neutral', miner
             is_building=is_building,
             is_worker=is_worker,
             is_army=is_army,
-        ))
+        )
         setattr(self, name, unit)
         self.units[type_id] = unit
         self.units[str_id] = unit