Mention Trivalent in homepage and feature page

[jermanuts]

Trivalent should be mention in the Homepage page, "About" section and in "Features" page.

Deserves to be mentioned :)

[RoyalOughtness]

It already is mentioned in the features list :)

[jermanuts]

@RoyalOughtness I was thinking of detailed info about the hardening Trivalent does like GOS have here https://grapheneos.org/features#vanadium

[RoyalOughtness]

@jermanuts hmmm. yeah we should probably have that somewhere.

I'm not sure where though 🤔

[jermanuts]

I guess at features page

[RoyalOughtness]

@jermanuts maybe a subsection, yeah.