Added v3-redirect-warning to the frameworks pages

[D-K-P]

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: e2100982649be25931401b3a0859bab06102a8e5

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[matt-aitken]

@samejr you should use this when you copy the v2 docs to that other repo

[matt-aitken]

This was used for the new v2docs repo