Fix bad link
Fix bad link

Summary:
I missed D6159242 unfortunately. It seems like it renamed `sections-events`
without updating the corresponding menu entry.

Please verify that the menu position is correct, i.e. that the order is
sensible.

A user noticed the 404.

Reviewed By: boxme

Differential Revision: D6209225

fbshipit-source-id: 6c8aea25326a24146b88344f0abec1335c2af9ea

facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho