Update app.py

app.py

@@ -18,7 +18,7 @@ def my_custom_tool()-> str: #it's import to specify the return type
         
     """
     path = Path("dad_jokes.txt")
-     if not path.exists():
+    if not path.exists():
         raise FileNotFoundError(f"{path} not found")
 
     jokes = []