[Rules] Removing the page rules article rewrite-host-headers

[ngayerie]

Summary

SPM-1670
Removing a page rules article in favor of the origin rules one

[github-actions]

Howdy and thanks for contributing to our repo. We review internal PRs within 1 week. If it's something urgent or has been sitting without a comment, start a thread in the Developer Docs space internally.

[github-actions]

This PR changes current filenames or deletes current files. Make sure you have redirects set up to cover the following paths:

• /rules/page-rules/how-to/override-url-or-ip-address/
• /rules/page-rules/how-to/rewrite-host-headers/

[github-actions]

Preview URL: https://5ba79f8a.preview.developers.cloudflare.com
Preview Branch URL: https://ngayerie-patch-13.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/rules/page-rules/how-to/override-url-or-ip-address/	https://ngayerie-patch-13.preview.developers.cloudflare.com/rules/page-rules/how-to/override-url-or-ip-address/
https://developers.cloudflare.com/rules/page-rules/how-to/rewrite-host-headers/	https://ngayerie-patch-13.preview.developers.cloudflare.com/rules/page-rules/how-to/rewrite-host-headers/
https://developers.cloudflare.com/rules/page-rules/reference/settings/	https://ngayerie-patch-13.preview.developers.cloudflare.com/rules/page-rules/reference/settings/
https://developers.cloudflare.com/cache/how-to/cache-keys/	https://ngayerie-patch-13.preview.developers.cloudflare.com/cache/how-to/cache-keys/
https://developers.cloudflare.com/load-balancing/pools/cloudflare-pages-origin/	https://ngayerie-patch-13.preview.developers.cloudflare.com/load-balancing/pools/cloudflare-pages-origin/
https://developers.cloudflare.com/rules/transform/url-rewrite/	https://ngayerie-patch-13.preview.developers.cloudflare.com/rules/transform/url-rewrite/