change return type

changed my_custom_tool return type to float

app.py

@@ -9,7 +9,7 @@ from Gradio_UI import GradioUI
 
 # Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
-def my_custom_tool(state_county:str, sales_tax:float,item:str)-> int: #it's import to specify the return type
+def my_custom_tool(state_county:str, sales_tax:float,item:str)-> float: #it's import to specify the return type
     #Keep this format for the description / args / args description but feel free to modify the tool
     """A tool that finds a price of an item and calculates the sales tax of the supplied state or county and returns the price of the item
     Args: