RFR: 8300011: Refactor code examples to use @snippet in java.util.TimeZone [v4]

[Iris Clark]

On Fri, 13 Jan 2023 17:45:51 GMT, Justin Lu <duke at openjdk.org> wrote:

>> This PR implements JEP 413: Code Snippets in Java API Documentation for _[java.util.TimeZone](https://docs.oracle.com/en/java/javase/19/docs/api/java.base/java/util/TimeZone.html)_.
>> 
>> Code examples using <pre> ...  </pre> blocks are replaced with the @ snippet syntax where applicable.
>
> Justin Lu has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add trailing ; to code examples

Marked as reviewed by iris (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/11955