Update moonriver.json

[JohnFingWick]

Adding my name to the moonriver delegate dashboard

[JohnFingWick]

Adding my name to moonriver delegate profile, currently it only has my wallet address

[petercraft]

Hi there! 👋 Thanks for opening this PR and contributing to the Moonriver delegate dashboard — we really appreciate it.

Before we can proceed with the review, could you please resolve the merge conflicts and ensure that the updated JSON file is properly formatted? Once everything is cleaned up and the checks pass, we’ll be happy to take another look.

Also, if you already have an entry in the JSON but want to update your data, you still need to follow the full registration process described in the dapp. This includes pasting your signature verification in the PR comment. For updates, please replace your existing entry rather than adding a new one.

Thanks again for your contribution! 🙏✨