RFR: More details for Skara backports [v2]

[Jesper Wilhelmsson]

> Added some more details around using the /backport command.

Jesper Wilhelmsson has updated the pull request incrementally with one additional commit since the last revision:

  Making it better

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Changes:
  - all: https://git.openjdk.org/guide/pull/124/files
  - new: https://git.openjdk.org/guide/pull/124/files/0cc53d78..96e9c728

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=guide&pr=124&range=01
 - incr: https://webrevs.openjdk.org/?repo=guide&pr=124&range=00-01

  Stats: 3 lines in 2 files changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/guide/pull/124.diff
  Fetch: git fetch https://git.openjdk.org/guide.git pull/124/head:pull/124

PR: https://git.openjdk.org/guide/pull/124