doc: add @richardlau to releasers

[BethGriggs]

Refs: #585

[mhdawson]

LGTM

[BethGriggs]

Now that @richardlau has prepared his first release, this can be merged. I'll be adding Richard to the relevant teams detailed in https://github.com/nodejs/Release/blob/master/GOVERNANCE.md#adding-new-releasers - this includes inviting to the nodejs-private organisation.

FYI @nodejs/releasers

[richardlau]

Now that @richardlau has prepared his first release, this can be merged. I'll be adding Richard to the relevant teams detailed in https://github.com/nodejs/Release/blob/master/GOVERNANCE.md#adding-new-releasers - this includes inviting to the nodejs-private organisation.

FWIW I'm already in the nodejs-private organisation (was added when I joined the Build WG), but I believe I would be added to more teams/repositories in that organization as part of the releaser onboarding.