add september heartcore release notes. update redirect api with new endpoint

[jmf-umbraco]

Description

Heartcore release notes & updated API docs for September.

Also moved the redirect API to underneath the content delivery API - It's not really a seperate API on its own and the docs should reflect that.

Type of suggestion

• Typo/grammar fix
• Updated outdated content
• New content
• Updates related to a new version
• Other

Product & version (if relevant)

Heartcore

Deadline (if relevant)

When should the content be published?

N/A

[sofietoft]

Thanks for the PR @jmf-umbraco ! 💪

I've made some suggestions, mainly to keep the content consistent with the rest of our docs 🙌

Also, could I get you to add the following line to the .gitbook.yaml file in the umbraco-heartcore directory:

api-documentation/redirect: api-documentation/content-delivery/redirect.md

^ It's a redirect for the article that was moved 💪

Finally, let me know when this should be merged - thanks!

[jmf-umbraco]

@sofietoft - Those suggestions all make sense to me, I'll commit them. And absolutely will add the redirect. I was going to ask about how we typically handle those, but I figured it would come up during review, so thanks for the info 😆

[jmf-umbraco]

Changes made. The new redirect endpoint goes out tomorrow, so any time from then onwards is fine.

[sofietoft]

Thanks for considering the suggestions @jmf-umbraco ! 😄
I just added a missing "redirects" heading to the yaml file - I thought it was already there 😅

But all looks good 👏
I'll get it merged once all the checks clears!