fixed lens config files

lens/gpt2/config.json

@@ -1 +1,7 @@
-{"bias": true, "identity_init": true, "include_input": true, "include_final": false, "orthogonal": false, "rank": null, "sublayers": false, "d_model": 768, "num_layers": 12, "vocab_size": 50257}
+{
+    "bias": true,
+    "include_input": true,
+    "d_model": 768,
+    "num_layers": 12,
+    "vocab_size": 50257
+}