RFR: Follow-on update due to the introduction of caused-by links

[Roger Calnan]

Noted that the label regression_ID is now deprecated and a caused-by link should be used.  Fixed a couple of typos

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Commit messages:
 - small update to deprecated sentence
 - Noted that the label regression_ID is now deprecated and a caused-by link should be used.  Fixed a couple of typos

Changes: https://git.openjdk.org/guide/pull/143/files
  Webrev: https://webrevs.openjdk.org/?repo=guide&pr=143&range=00
  Stats: 6 lines in 1 file changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/guide/pull/143.diff
  Fetch: git fetch https://git.openjdk.org/guide.git pull/143/head:pull/143

PR: https://git.openjdk.org/guide/pull/143