Update the homepage link in Chart.yaml

[stevehobbsdev]

Currently the "homepage" link on the chart page is incorrect and points to a 404 - this PR points it to the right place.

Review Checklist

• [X] I have clicked on "allow edits by maintainers".
• [ ] I have added documentation for new/changed functionality in this PR or in a PR to openfga.dev [Provide a link to any relevant PRs in the references section above]
• [X] The correct base branch is being used, if not main
• [ ] I have added tests to validate that the change in functionality is working as expected

[linux-foundation-easycla[bot]]

• :x: - login: @stevehobbsdev / name: Steve Hobbs . The commit (65ad9dc70a94905f8a5a6edef25c8adca947d305) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.