Updated Umbraco Commerce release notes

[mattbrailsford]

📋 Description

Umbraco Commerce release notes

✅ Contributor Checklist

I've followed the Umbraco Documentation Style Guide and can confirm that:

• Code blocks are correctly formatted.
• Sentences are short and clear (preferably under 25 words).
• Passive voice and first-person language (“we”, “I”) are avoided.
• Relevant pages are linked.
• All links work and point to the correct resources.
• Screenshots or diagrams are included if useful.
• Any code examples or instructions have been tested.
• Typos, broken links, and broken images are fixed.

Product & Version (if relevant)

Umbraco Commerce v15 + v16

Deadline (if relevant)

ASAP

[eshanrnh]

Thanks for the PR, @mattbrailsford 🙌 The PR looks great. I've fixed a small typo in the PR.