Add link to Kubernetes Release Calendar for burndown meetings (#772)
Add link to Kubernetes Release Calendar for burndown meetings (#772)

* Add link to Kubernetes Release Calendar for burndown meetings

* Update releases/release-1.16/README.md

Co-Authored-By: Stephen Augustus <6642279369e4bcd12210e45c5d73973700630645@users.noreply.github.com>

* Update releases/release-1.16/README.md

Co-Authored-By: Stephen Augustus <6642279369e4bcd12210e45c5d73973700630645@users.noreply.github.com>

kubernetes/sig-release