Maybe I'm not understanding Auto Update Position correctly, but the link does nothing if I move the ramp. Wouldn't that require a rebake?
Could this be why the explanation was left out of the doc? https://github.com/Unity-Technologies/NavMeshComponents/blob/master/Documentation/NavMeshLink.md
I believe it's the same as the regular off mesh link component:
When enabled, the Off-Mesh link will be reconnected to the NavMesh when the end points move. If disabled the link will stay at its start location even if the end points are moved.