RFR: Select component when filing issue

[Jesper Wilhelmsson]

Added missing info about components when filing a JBS issue
Also clarified how to close a resolved issue through verification

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Commit messages:
 - Select component when filing issue

Changes: https://git.openjdk.org/guide/pull/169/files
  Webrev: https://webrevs.openjdk.org/?repo=guide&pr=169&range=00
  Stats: 4 lines in 1 file changed: 3 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/guide/pull/169.diff
  Fetch: git fetch https://git.openjdk.org/guide.git pull/169/head:pull/169

PR: https://git.openjdk.org/guide/pull/169