UE4 example README.md link broken

[RobinRowe]

https://github.com/spatialos/RPGDemo/blob/master/README.md points to:

SpatialOS SDK Documentation - Improbable

which doesn’t exist.

The correct link is:

Setting up the example project

[dasilvacontin]

Thanks much for reporting the issue, @RobinRowe! I’ve fixed it internally and it should be rolled out in the next release.