docs: stacked PRs docs update

[eeminionn]

Summary

Addresses #45404: stacked PRs docs update

Changed files

• content/pull-requests/how-tos/create-pull-requests/creating-stacked-pull-requests.md

Validation

• git diff --check: passed

Fixes #45404

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Table of review links

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Source	Review	Production	What Changed
pull-requests/how-tos/create-pull-requests/creating-stacked-pull-requests.md	fpt ghec	fpt ghec

Key: fpt: Free, Pro, Team; ghec: GitHub Enterprise Cloud; ghes: GitHub Enterprise Server

🤖 This comment is automatically generated.

[Sharra-writes]

@eeminionn Thanks for making the change!

[github-actions]

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