fix(ai-gateway): Add ai sync command to the configure on-prem doc

[tomek-labuk]

Description

Fixes #issue

Preview Links

https://deploy-preview-6650--kongdeveloper.netlify.app/ai-gateway/configure-on-prem/

Checklist

• Tested how-to docs. If not, note why here.
• All pages contain metadata.
• Any new docs link to existing docs.
• All autogenerated instructions render correctly (API, decK, Konnect, Kong Manager).
• Style guide (capitalized gateway entities, placeholder URLs) implemented correctly.
• Every page has a description entry in frontmatter.
• Add new pages to the product documentation index (if applicable).

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[harshadixit12]

@tomek-labuk the only feedback I have is since each example contains a conversion step (deck file ai2kong), can we mention that customers can choose to either sync kong.yaml using deck gateway sync, or directly use deck ai sync - I think at the moment we don't have an example which uses deck gateway sync.

[tomek-labuk]

@tomek-labuk the only feedback I have is since each example contains a conversion step (deck file ai2kong), can we mention that customers can choose to either sync kong.yaml using deck gateway sync, or directly use deck ai sync - I think at the moment we don't have an example which uses deck gateway sync.

@harshadixit12 - I've applied it. Does it make sense?

[juliamrch]

I find the whole page quite confusing, and the fixes might add more confusion to the whole doc. I've made some suggestions based on what I've understood from the reference page. However, I advise completely reworking this reference page from start to end.