[CNCF] Add FabEdge to CNCF Contributors Website

[Jinglun-Shang]

Parts of the CNCF onboarding issue tracked by this issue

This is the list of all bullet points from the CNCF onboarding issue that this issue will track:

• Have added your project to https://github.com/cncf/contribute

[haotaogeng]

PR has been submitted.
cncf/contribute#101

[github-actions]

Stale issue message