Fix typo in `configuration_phi4flash.py` (#8)

- Fix typo in `configuration_phi4flash.py` (f92f7acab4280c88c874d51a833c8a2d2aae9826)


Co-authored-by: Harry Mellor <[email protected]>

configuration_phi4flash.py

@@ -146,7 +146,7 @@ class Phi4FlashConfig(PretrainedConfig):
         self.layer_types = layer_types
     
         if self.layer_types is None:
-            is_sliding = lambda i: i < num_hidden_layers // 2 and i % 2 == 1,
+            is_sliding = lambda i: i < num_hidden_layers // 2 and i % 2 == 1
             self.layer_types = [
                 "sliding_attention" if is_sliding(layer_idx) else "full_attention"
                 for layer_idx in range(num_hidden_layers)