RFR: More testing

[Jesper Wilhelmsson]

* RN-Deprecated example should link to an issue with the RN-Deprecated label
* PRs should list what testing has been done
* Make sure to test the final version of a fix

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Commit messages:
 - More testing

Changes: https://git.openjdk.org/guide/pull/151/files
  Webrev: https://webrevs.openjdk.org/?repo=guide&pr=151&range=00
  Stats: 4 lines in 2 files changed: 2 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/guide/pull/151.diff
  Fetch: git fetch https://git.openjdk.org/guide.git pull/151/head:pull/151

PR: https://git.openjdk.org/guide/pull/151