Update app.py

app.py

@@ -11,7 +11,7 @@ _ddg = DuckDuckGoSearchTool()
 
 @tool
 def web_search(query: str) -> str:
-"""Search the web using DuckDuckGo and return results.
+    """Search the web using DuckDuckGo and return results.
 
     Args:
         query: The search query string.