Update get_balance_allowance.py

There is an error/typo in the no portion of this example. The Param was  not formatted properly. Specefically the token_id was not included inside the BalanceAlowanceParams. 
Resulting in the following error:
TypeError: get_balance_allowance() got an unexpected keyword argument 'token_id'


I resolved it by moving the token_id to the right place.

examples/get_balance_allowance.py

@@ -33,8 +33,10 @@ def main():
     print(yes)
 
     no = client.get_balance_allowance(
-        params=BalanceAllowanceParams(asset_type=AssetType.CONDITIONAL),
+        params=BalanceAllowanceParams(
+            asset_type=AssetType.CONDITIONAL,
         token_id="16678291189211314787145083999015737376658799626183230671758641503291735614088",
+        )
     )
     print(no)