[w3c/webauthn] 664950: master -> main ?

  Branch: refs/heads/wseltzer-patch-terminology
  Home:   https://github.com/w3c/webauthn
  Commit: 66495085753a8e3c3066fa5927f1d6fc495ed3f1
      https://github.com/w3c/webauthn/commit/66495085753a8e3c3066fa5927f1d6fc495ed3f1
  Author: Wendy Seltzer <wseltzer@w3.org>
  Date:   2021-02-25 (Thu, 25 Feb 2021)

  Changed paths:
    M index.bs

  Log Message:
  -----------
  master -> main ? 

Pubrules is now flagging uses of "master" and recommending their replacement. https://w3c.github.io/manual-of-style/#inclusive
Is "main" attestation private key an appropriate substitute?