Fixed code error from reddit

Author: aaharr

python-typing/hello_world.py

@@ -1,9 +1,8 @@
 # hello_world.py
 def hello_world(name: str = 'Joe') -> str:
-    print(f'Hello {name}')
+    return f'Hello {name}'
 
 
 hello_world(name='Mark')
 
 hello_world(name=2)
-