Update app.py

app.py

@@ -12,13 +12,13 @@ def slice_list(lst: list, start: int, end: int) -> list:
     """
     return lst[start:end]
 
-def say_hello(str: name) -> str:
+def say_hello(name: str) -> str:
     """
     A tool that returns message "Hello <name>"
     Args:
         str: name to say hello to.
     Returns:
-        "Hello <name>"
+        Hello <name>
     """
     return f"Hello, {name}"