fix gangster tool docstring

app.py

@@ -11,7 +11,9 @@ from Gradio_UI import GradioUI
 @tool
 def answer_like_gangster(sentence:str)-> str: #it's import to specify the return type
     #Keep this format for the description / args / args description but feel free to modify the tool
-    """A tool that modifiy the intended answer to make it sound like a gangster
+    """A tool that modifiy the intended answer to make it sound like a gangster.
+    Args:
+        sentence: A string representing a normal answer before it is gangsterized.
     """
     return sentence + ". You feel me, bro?"