Update README.md

README.md

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 license: apache-2.0
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-This is classification model trained on RoBERTa base language model to classify a given text input into sql or docs
+This is classification model trained on RoBERTa base language model to classify a given text input into sql or docs. For a given question , if it classifies '0' it is of docs type and if it classifies as '1' , it is of sql type