message: docs: Add support schedule for v10
  This commit adds the support schedule for v10.
  v10.0.0 was released on June 24, 2020.
  Active support ends six months later, on Dec 24, 2020.
  Long term support ends a year after that, on Dec 24, 2021.
  PR Close
diff: @@ -101,6 +101,7 @@ The following table provides the status for Angular versions under support.
  Version | Status | Released | Active Ends | LTS Ends
  ------- | ------ | ------------ | ------------ | ------------
  +^10.0.0 | Active | Jun 24, 2020 | Dec 24, 2020 | Dec 24, 2021
  ^9.0.0 | Active | Feb 06, 2020 | Aug 06, 2020 | Aug 06, 2021
  ^8.0.0 | LTS | May 28, 2019 | Nov 28, 2019 | Nov 28, 2020
  