Update model card

README.md

@@ -1,9 +1,11 @@
-AllenAi's <i>scibert_scivocab_uncased</i> fine-tuned on SQuAD 2.0 achieving F1 = 86.85.
+## AllenAI's <i>scibert_scivocab_uncased</i> fine-tuned on SQuAD 2.0 evaluated with F1 = 86.85
 
-To load the model:
+#### To load the model:
 
+```
 from transformers import BertTokenizerFast
 from transformers import BertForQuestionAnswering
-
+ 
 tokenizer = BertTokenizerFast.from_pretrained("LoudlySoft/scibert_scivocab_uncased_squad")
-model = BertForQuestionAnswering.from_pretrained("LoudlySoft/scibert_scivocab_uncased_squad")
+model = BertForQuestionAnswering.from_pretrained("LoudlySoft/scibert_scivocab_uncased_squad")
+```