added missing type hint

app.py

@@ -9,7 +9,7 @@ from typing import List, Dict
 from Gradio_UI import GradioUI
 
 @tool
-def get_country_data_by_country_name(country_name) -> List[Dict]:
+def get_country_data_by_country_name(country_name: str) -> List[Dict]:
     """
     Fetches and prints data for a country from the REST Countries API.
     Args: