Update app.py

app.py

@@ -16,7 +16,7 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
         arg1: the first argument
         arg2: the second argument
     """
-     try:
+    try:
         # Generate image using the loaded tool
         result = image_generation_tool(prompt=arg1)