Fix PR URL in changelog

[fearful-symmetry]

What does this PR do?

Looks like I had a copy-and-paste issue when I opened #4568

This just changes the changelog.yml entry so it points at the correct PR, which is apparently used to generate docs.

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• Start Time: 2022-11-15T19:20:16.683+0000

• Duration: 14 min 37 sec

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Passed	1
Skipped	0
Total	1

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🌐 Coverage report

Name	Metrics % (covered/total)	Diff
Packages	100.0% (0/0)	💚
Files	100.0% (0/0)	💚 2.314
Classes	100.0% (0/0)	💚 2.314
Methods	33.333% (1/3)	👎 -57.937
Lines	100.0% (0/0)	💚 8.295
Conditionals	100.0% (0/0)	💚