fix the system prompt example

[ViperX7]

I believe that the system prompt example was malformed and confuses the model

before change 'description' : 'get_stock_fundamentals(symbol: str) -> dict - Get fundamental data for a given stock symbol using yfinance API.\n\n Args:\n symbol (str): The stock symbol.\n\n Returns:\n dict: A dictionary containing fundamental data.'

after change change 'description' : 'Get fundamental data for a given stock symbol using yfinance API.'

[ViperX7]

I am not sure but according to me the content inside the <tools></tools> tag should be in a list []

[interstellarninja]

yes the content inside <tools></tools> should be in a list []