RFR: 8300794: Use @snippet in java.util:i18n [v2]

[Justin Lu]

> Please review this javadoc only change which uses `@snippet` and `@linkplain` in i18n related util packages.

Justin Lu has updated the pull request incrementally with one additional commit since the last revision:

  Review: Move links on top, fix indentation in example

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Changes:
  - all: https://git.openjdk.org/jdk/pull/13920/files
  - new: https://git.openjdk.org/jdk/pull/13920/files/179671e3..e56955e1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13920&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13920&range=00-01

  Stats: 5 lines in 1 file changed: 2 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/13920.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13920/head:pull/13920

PR: https://git.openjdk.org/jdk/pull/13920