Update Matt's description

Hi!

Currently my description on the website says:

Matt Finkel, Developer
    Has helped maintain and develop BridgeDB, OONI, and many other projects.

I think this is great except for including OONI. To be fair, I never worked on OONI (I represented the OONI team once a few years ago), so I don't deserve any credit for their amazing work.

A new version that I feel less bad about is:

Matt Finkel, Developer, Trainer, Outreacher
    Helps in various areas. Worked on tor, torsocks, and many other projects.
    Helped maintain and develop BridgeDB.

Feel free to tweak it as needed. I can sign this request if you need it.

Thanks!