[Improvement] Prompt LM to return SQL query in markdown format for easy extraction

[alex-sun-kuo]

Prompt LM to use markdown (```) to indicate code text. Involves editing the few shot examples. Currently, we take text before ';' and after ':' from the LM response to extract the SQL query.

[asaprahul]

I think you implemented this? @alex-sun-kuo Feel free to close