Yup!

I especially need these kind of pages for onboarding.

As in, I don't want to let users read my boring text about what relays are or make some sub-standard video about it.

I want to link to a Relay wiki that let's users discover what they are in whatever way they want.

For some that might be watching Instagram-like stories about it, for others it might be joining a forum full of golang geeks.