Align label mapping with conll2003 dataset

Hi there, your model is using a default label mapping. Accept this PR to align the label mapping with the `conll2003` dataset this model was trained on. This will enable your model to be evaluated by [Hugging Face's automatic model evaluator](https://huggingface.co/spaces/autoevaluate/model-evaluator?dataset=conll2003)

config.json

@@ -13,7 +13,7 @@
   "hidden_act": "gelu_new",
   "hidden_dropout_prob": 0,
   "hidden_size": 768,
- "id2label": {
+  "id2label": {
     "0": "O",
     "1": "B-PER",
     "2": "I-PER",
@@ -28,15 +28,15 @@
   "inner_group_num": 1,
   "intermediate_size": 3072,
   "label2id": {
-    "LABEL_0": 0,
-    "LABEL_1": 1,
-    "LABEL_2": 2,
-    "LABEL_3": 3,
-    "LABEL_4": 4,
-    "LABEL_5": 5,
-    "LABEL_6": 6,
-    "LABEL_7": 7,
-    "LABEL_8": 8
+    "O": 0,
+    "B-PER": 1,
+    "I-PER": 2,
+    "B-ORG": 3,
+    "I-ORG": 4,
+    "B-LOC": 5,
+    "I-LOC": 6,
+    "B-MISC": 7,
+    "I-MISC": 8
   },
   "layer_norm_eps": 1e-12,
   "max_position_embeddings": 512,
@@ -52,4 +52,4 @@
   "transformers_version": "4.16.2",
   "type_vocab_size": 2,
   "vocab_size": 30000
-}
+}