Update config.json

config.json

@@ -1,10 +1,10 @@
 {
   "architectures": [
-    "DprReader"
+    "DPRReader"
   ],
   "model_type": "dpr",
-  "pad_id": 0,
-  "pretrained_model_cfg": "bert-base-uncased",
+  "pad_token_id": 0,
+  "pretrained_model_config_name": "bert-base-uncased",
   "projection_dim": 0,
   "sequence_length": 512
 }