(PULL_REQUEST_TEMPLATE) update link to changelog documentation

[AntoineDoubovetzky]

Summary

I just opened another PR and noticed the changelog page in the wiki redirected to the react native documentation.

Changelog

[Internal] [Changed] - Update link to changelog documentation in PULL_REQUEST_TEMPLATE

Test Plan

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	7,820,281	+0
android	hermes	armeabi-v7a	7,213,332	+0
android	hermes	x86	8,132,759	+0
android	hermes	x86_64	8,110,873	+0
android	jsc	arm64-v8a	9,698,616	+0
android	jsc	armeabi-v7a	8,453,758	+0
android	jsc	x86	9,649,262	+0
android	jsc	x86_64	10,247,220	+0

Base commit: f3db6cc
Branch: main

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
ios	-	universal	n/a	--

Base commit: f3db6cc
Branch: main

[facebook-github-bot]

@cortinico has imported this pull request. If you are a Meta employee, you can view this diff on Phabricator.

[react-native-bot]

This pull request was successfully merged by @AntoineDoubovetzky in 1d997ce.

^{When will my fix make it into a release? | Upcoming Releases}