Update incorrect PR link in changelog regarding "check x/bank send enabled" fix (backport #2714)

[mergify]

This is an automatic backport of pull request #2714 done by Mergify.
Cherry-pick of 7249d82 has failed:

On branch mergify/bp/release/v4.2.x/pr-2714
Your branch is up to date with 'origin/release/v4.2.x'.

You are currently cherry-picking commit 7249d82.
  (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:   CHANGELOG.md

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/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[chatton]

My editor stripped out a lot of trailing whitespace.