[Hyperdrive] Adding example for connecting Hyperdrive to Fly.io

[Oxyjun]

Summary

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• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.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.

[hyperlint-ai]

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PR Change Summary

Added an example for connecting Hyperdrive to a Fly database instance, enhancing the documentation for users.

• Introduced a new example for connecting Hyperdrive to a Fly PostgreSQL database instance.
• Provided detailed steps for allocating a public IP address and configuring an external service.
• Included instructions for deploying the new configuration and obtaining the connection string.

Modified Files

• src/content/docs/hyperdrive/index.mdx

Added Files

• src/content/docs/hyperdrive/examples/fly.mdx

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[elithrar]

@thomasgauvin does this work?

[github-actions]

Preview URL: https://8c339bbc.preview.developers.cloudflare.com
Preview Branch URL: https://jun-hyperdrive-flyio-example.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/hyperdrive/examples/fly/	https://jun-hyperdrive-flyio-example.preview.developers.cloudflare.com/hyperdrive/examples/fly/
https://developers.cloudflare.com/hyperdrive/	https://jun-hyperdrive-flyio-example.preview.developers.cloudflare.com/hyperdrive/

[thomasgauvin]

LGTM