message: docs: update repository URL
diff: -Foundry uses [`semantic-release`](https://github.com/semantic-release/semantic-release) to automatically publish [GitHub release notes](https://github.com/sumup-oss/circuit-icons/releases) for each version.
  +Icons uses [`semantic-release`](https://github.com/semantic-release/semantic-release) to automatically publish [GitHub release notes](https://github.com/sumup-oss/icons/releases) for each version.
  