Change the copy of "Underlying Protocols" on the landing

[jorgeschnura]

We want to make it clear to everyone that we're automatically optimising across all those protocols. If you think a couple lines below that as section subtitle would help, let @xReady45 know so that he can implement in our design.

[berniBZS]

Suggested copy:

One vault, all of DeFi. Automatic optimization across every major protocol.

@jorgeschnura @xReady45

Added a comment to the figma design of the new UXUI