feat(app): add docstring to greet(name)

app.py

@@ -1,6 +1,13 @@
 import gradio as gr
 
 def greet(name):
+    """
+    Greets the user with a personalized hello message.
+    Args:
+        name (str): The name of the user to greet.
+    Returns:
+        str: A greeting message addressed to the specified user.
+    """
     return "Hello " + name + "!!"
 
 demo = gr.Interface(fn=greet, inputs="text", outputs="text")