<i18n dev> RFR: 8337285: Examine java.text.DecimalFormat API for api/implXxx tag usage [v2]

[Justin Lu]

> Please review this PR which is a simple doc only change to java.text.DecimalFormat.
> 
> Mainly, the DecimalFormat constructors have wording that recommends using the NumberFormat factory methods for a standard formatting. This would be better tagged as an `@apiNote`. Minor wording updates included as well.
> 
> A corresponding [CSR](https://bugs.openjdk.org/browse/JDK-8337286) has also been drafted.

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

  reflect review

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Changes:
  - all: https://git.openjdk.org/jdk/pull/20361/files
  - new: https://git.openjdk.org/jdk/pull/20361/files/562a44ed..c16bfab1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20361&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20361&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/20361.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20361/head:pull/20361

PR: https://git.openjdk.org/jdk/pull/20361