[Gateway] Custom cert origin warning

[maxvp]

PCX-17054

[hyperlint-ai]

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PR Change Summary

Updated the documentation regarding custom certificates and their usage with Gateway connections.

• Clarified the use of custom certificates between users and the Gateway proxy.
• Specified that Gateway connects to origin servers using publicly trusted certificates.
• Provided guidance on connecting to self-signed origin servers through HTTP policy settings.

Modified Files

• src/content/docs/cloudflare-one/connections/connect-devices/user-side-certificates/custom-certificate.mdx

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[github-actions]

Preview URL: https://fa2450b3.preview.developers.cloudflare.com
Preview Branch URL: https://max-gw-cert-connections.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/cloudflare-one/connections/connect-devices/user-side-certificates/custom-certificate/	https://max-gw-cert-connections.preview.developers.cloudflare.com/cloudflare-one/connections/connect-devices/user-side-certificates/custom-certificate/

[caley-b]

Approving with a small question/suggestion but leaving it up to you.