RFR: 7903397: Update changelog for jtreg 7.1.1

[Jonathan Gibbons]

On Wed, 7 Dec 2022 15:36:38 GMT, Christian Stein <cstein at openjdk.org> wrote:

> Please review this commit that updates the changelog file to include a section for jtreg 7.1.1
> 
> It also adds the entry to the list of noteworthy unreleased changes of the upcoming jtreg 7.2 release.

The tags for 7.1.1 seem incorrect

CHANGELOG.md line 3:

> 1: 
> 2: 
> 3: ## [Unreleased](https://git.openjdk.org/jtreg/compare/7.1.1+1...master)

You dropped the `jtreg-` ... that seems wrong...

CHANGELOG.md line 8:

> 6:   * [CODETOOLS-7903390](https://bugs.openjdk.org/browse/CODETOOLS-7903390)
> 7: 
> 8: ## [7.1.1+1](https://git.openjdk.org/jtreg/compare/jtreg-7.1+1...7.1.1+1)

should there be a `jtreg-` after the `...`

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Changes requested by jjg (Lead).

PR: https://git.openjdk.org/jtreg/pull/142