Fix link in release notes (backport #16439)

[mergify]

Our translation pipeline broke due to a misplaced tick in a link:

Fixed `#16231 <https://github.com/Qiskit/qiskit/issues/16231>__` 

It should be (I think):

Fixed `#16231 <https://github.com/Qiskit/qiskit/issues/16231>`__

Thanks!

AI/LLM disclosure

• I didn't use LLM tooling, or only used it privately.
• I used the following tool to help write this PR description:
• I used the following tool to generate or modify code:

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This is an automatic backport of pull request #16439 done by [Mergify](https://mergify.com).

[mergify]

Cherry-pick of b3d0f93 has failed:

On branch mergify/bp/stable/2.4/pr-16439
Your branch is up to date with 'origin/stable/2.4'.

You are currently cherry-picking commit b3d0f9312.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   releasenotes/notes/fix-underflow-constrained-reschedule-0c2df99fd6aae5a3.yaml

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[qiskit-bot]

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[coveralls]

Coverage Report for CI Build 27582401145

Coverage decreased (-0.006%) to 87.884%

Details

• Coverage decreased (-0.006%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 17 coverage regressions across 3 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

17 previously-covered lines in 3 files lost coverage.

File	Lines Losing Coverage	Coverage
crates/qasm2/src/parse.rs	12	96.68%
crates/qasm2/src/lex.rs	4	91.77%
crates/circuit/src/parameter/parameter_expression.rs	1	90.53%

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Coverage Stats

Relevant Lines:	119718
Covered Lines:	105213
Line Coverage:	87.88%
Coverage Strength:	1007519.87 hits per line

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💛 - Coveralls