Update Documentation/ReleaseNotes.md
Update Documentation/ReleaseNotes.md

Co-Authored-By: Will <03f7414553f4a516a3c3f51b46f4027c16f58f76@microsoft.com>
killerantz/HoloToolkit-Unity,killerantz/HoloToolkit-Unity,DDReaper/MixedRealityToolkit-Unity,killerantz/HoloToolkit-Unity,killerantz/HoloToolkit-Unity