[AIG]fixes from feedback

[daisyfaithauma]

Summary

Fixes to AI gateway documentation

Screenshots (optional)

Documentation checklist

• The documentation style guide has been adhered to.
• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.
• Files which have changed name or location have been allocated redirects.

[cloudflare-workers-and-pages]

Deploying cloudflare-docs with    Cloudflare Pages

Latest commit:	538dd79
Status:	✅  Deploy successful!
Preview URL:	https://e555a820.cloudflare-docs-7ou.pages.dev
Branch Preview URL:	https://aig-fixes-from-feedback.cloudflare-docs-7ou.pages.dev

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Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/ai-gateway/get-started/	https://aig-fixes-from-feedback.cloudflare-docs-7ou.pages.dev/ai-gateway/get-started/
https://developers.cloudflare.com/ai-gateway/providers/	https://aig-fixes-from-feedback.cloudflare-docs-7ou.pages.dev/ai-gateway/providers/