current CONTRIBUTING.md (for all repo in immersive-web?) have a link to [Patent Policy 2004-Feb-05](https://www.w3.org/Consortium/Patent-Policy-20040205/) but not group effective [Patent Policy 2017-Aug-01](https://www.w3.org/Consortium/Patent-Policy-20170801/). we'd better to switch all of this? (seems no page which have a dated link to Process)
current CONTRIBUTING.md (for all repo in immersive-web?) have a link to Patent Policy 2004-Feb-05 but not group effective Patent Policy 2017-Aug-01.
we'd better to switch all of this?
(seems no page which have a dated link to Process)