docs: redirect Github page to new repo site

[thephez]

Issue being fixed or feature implemented

With the introduction of the monorepo, this repo will no longer be updated. Since there are some links on various sites that direct people to the Github pages site hosted here, it would be better to redirect them to the new repo's site than to simply shutdown this one.

What was done?

Modified the site to redirect to the dashevo/platform GH pages site.

How Has This Been Tested?

Tested on my own fork

Breaking Changes

Checklist:

• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have added or updated relevant unit/integration/functional/e2e tests
• [ ] I have made corresponding changes to the documentation

For repository code-owners and collaborators only

• [ ] I have assigned this pull request to a milestone

[thephez]

FYI - I'm not certain if this should go to master or to v0.22-dev (default branch).