Use new name of needs_sign_in in example

examples/maqpy/needs_sign_in.py

@@ -4,14 +4,14 @@ app = maqpy.App(__name__)
 
 
 @app.route("/")
-@maqpy.needs_signin(login_html=f"Hello! {maqpy.sign_in_snippet}")
+@maqpy.needs_sign_in(login_html=f"Hello! {maqpy.sign_in_snippet}")
 def index():
     return "Index function"
 
 
 # needs_signin can also be called with no args
 @app.route("/test")
-@maqpy.needs_signin
+@maqpy.needs_sign_in
 def test():
     return "Test function"