docs: add more documentation around generating the changelog page [BAU-906]

[massao]

Purpose of PR

Add more information about the release process and how it uses the changesets to generate the changelog page

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 3eadc85c3453dfc658249b67d631155ba95a47b5

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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Name	Status	Preview	Updated
forma-36	✅ Ready (Inspect)	Visit Preview	Aug 26, 2022 at 8:52AM (UTC)