Correct Frodobots Earth Rover SDK link and add setup instructions

[cagataycali]

Updated the Frodobots SDK link and added credential setup instructions.

I couldn't find the SDK API key from the https://rovers.frodobots.com/owner/settings/ page which is described in Frodobots repository and chatted with frodobots chatbot and got a google form url. Their API responses in https://my.frodobots.com/owner-drive/ page, sdk_enabled field is returning false... Seems like sdk needs to be enabled by the frodobot team. Also cut an issue there frodobots-org/earth-rovers-sdk#21

This PR corrects the frodobot-org URL and adds missing environment variable settings for running hypercorn main:app --reload.

Unless the SDK key provided, web UI returns:

{
  "detail": "Authorization header not configured"
}

[Copilot]

Pull request overview

This PR corrects the Frodobots SDK repository URL from the incorrect github.com/Frodobots to the correct github.com/frodobots-org organization path. It also enhances the setup documentation by adding a new step for configuring environment variables required to run the SDK, including API credentials and optional configuration parameters.

Key changes:

• Fixed SDK repository URL to use correct GitHub organization path
• Added comprehensive environment variable configuration step with examples
• Updated step numbering from 2-3 to 2-4 to accommodate the new credential setup section

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[imstevenpmwork]

LGTM, thanks!