Task scope: Replace the supported platforms section with the support matrix in the Google doc (does not include the product integration section at the end).

We are asking for the documentation team to review and assist with better English in the Support Matrix document for OpenShift sandboxed containers before publishing it in an official article.

As of now, we plan to have it as a separate guide, as other products do, and not in the documentation. Also, because it is expected that the Eng/QE team will update the article with up-to-date info with each release.

The document to review:

https://docs.google.com/document/d/1nx8j9j6ADqKthzjV3MDJ12sOGu-JQ-gfMxSuq3U7egk/edit