format fix, comparing datatype

Signed-off-by: kta-intel <[email protected]>

openfl/federated/task/runner_xgb.py

@@ -29,7 +29,7 @@ def check_precision_loss(logger, converted_data, original_data):
     reconstructed_json = reconstructed_bytes.decode("utf-8")
     reconstructed_data = json.loads(reconstructed_json)
 
-    assert type(original_data) == type(
+    assert type(original_data) is type(
         reconstructed_data
     ), "Reconstructed datatype does not match original."