Broken Link on Google Auth Docs

[a-grealish]

This link refers to a localhost URL and doesn't work when deployed to production.

docs/docs/sso.md

Line 176 in 42b7d98

Google OAuth2/OIDC is not supported as Google does not support PKCE clients at this time. You can, however, use [Keycloak as a SAML Identity Broker](http://localhost:3000/central/sso#keycloak-as-a-saml-identity-broker) with Google Workspace.

This should instead point to https://docs.zerotier.com/sso/#keycloak-as-a-saml-identity-broker