Update README.md

README.md

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 # VizWiz-Bert model (uncased)
-Fine-tuning of BERT-base model for Fill Mask task on [VizWiz-Vision Skills for VQA](https://vizwiz.org/tasks-and-datasets/vision-skills/)
+Fine-tuning the BERT-base model for the Fill Mask task in [VizWiz-Vision Skills for VQA](https://vizwiz.org/tasks-and-datasets/vision-skills/)
 
   ## Fine-tuining information
   * model: **bert-base-uncased**