RFR: 8306597: Improve string formatting in EquivMapsGenerator.java [v4]

[Naoto Sato]

On Fri, 12 May 2023 17:25:45 GMT, Justin Lu <jlu at openjdk.org> wrote:

>> Please review changes to `EquivMapsGenerator.java` (which is used to generate the Locale equivalencies for the JDK).
>> 
>> The file previously used large concatenated Strings, which are now replaced with text blocks, in addition to some cleanup. No functionality is changed, the Locale equivalencies builds the same.
>
> Justin Lu has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Review: capitalize and move footer text. Add comments to main

Marked as reviewed by naoto (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/13935#pullrequestreview-1424907858