Align label mapping with cola config of glue dataset

Hi there, your model is using a default label mapping. Accept this PR to align the label mapping with the `cola` config of the `glue` 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=glue)

config.json

@@ -26,5 +26,13 @@
   "transformers_version": "4.17.0",
   "type_vocab_size": 16,
   "upsampling_kernel_size": 4,
-  "use_cache": true
-}
+  "use_cache": true,
+  "label2id": {
+    "unacceptable": 0,
+    "acceptable": 1
+  },
+  "id2label": {
+    "0": "unacceptable",
+    "1": "acceptable"
+  }
+}