Update market_data.py

tools/market_data.py

@@ -11,8 +11,8 @@ class MarketDataInput(BaseModel):
 
 # ---------- Tool ----------
 class MarketDataTool(BaseTool):
-    args_schema = Type[BaseModel] = MarketDataInput
-    class config:
+    args_schema: Type[BaseModel] = MarketDataInput
+    class Config:
         name = "get_market_data"
         description = (
             "Fetches the current market price of a cryptocurrency "