Merge pull request microsoft#9488 from davidkline-ms/fixVersion

increment MRTK version to 2.6.1

Merge pull request microsoft#9426 from microsoft/prerelease/2.6.0_sta…

…bilization

Prerelease/2.6.0 stabilization

Merge pull request microsoft#9203 from davidkline-ms/docUpd254

update upm docs for mixed reality feature tool

Merge pull request microsoft#9085 from keveleigh/revert-oculushand

Revert "Merge pull request microsoft#9075 from RogPodge/oculushandrayfix" for 2.5.3

Merge pull request microsoft#9079 from keveleigh/docs

Update supported platforms in docs

Merge branch 'mrtk_release' into releases/2.5.1

Merge pull request microsoft#8712 from davidkline-ms/docVersions

Update github.io documentation version list and default

Merge pull request microsoft#7985 from microsoft/releases/2.4.0

Merging final 2.4 doc change

using admin override based on previous approvals

Merge pull request microsoft#7311 from microsoft/keveleigh-patch-1

Clarify Unity version and add XR SDK docs reference

Merge pull request microsoft#6850 from CDiaz-MS/update_remoting_doc

Add note to Holographic Remoting page