[Maintenance] CONTRIBUTING.md team lists inaccessible to outsiders

[martynd]

• What should be done:
  CONTRIBUTING.md lists the teams for selecting reviewers but teams cannot be viewed unless you're part of the org. Members probably need to be listed in the doc directly

• Benefit:
  People tag the right people and only the right people

• Details:
  Was trying to look up the FE team for this issue