updated model summary

README.md

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 ## Model Summary
 
-The Narrow Transformer (NT) model NT-Java-1.1B is an open-source specialized code model built on StarCoderBase, designed for code completion tasks in Java programming. The model is a decoder-only transformer with Multi-Query-Attention and learned absolute positional embeddings and was finetuned for Java subset of the training data (starcoderdata) which is ~22B tokens and with a context of 8192 tokens. 
+The Narrow Transformer (NT) model NT-Java-1.1B is an open-source specialized code model built by extending pre-training on starcoderbase-1b, designed for code related tasks in Java programming. The model is a decoder-only transformer with Multi-Query-Attention and a context length of 8192 tokens. The model has been trained with Java subset of the starcoderdata dataset, which is ~22B tokens.
 
 - **Repository:** [bigcode/Megatron-LM](https://github.com/bigcode-project/Megatron-LM)
 - **Project Website:**