Bump docs-resources from 8e51e9f to 1660fd9

Bumps [docs-resources](https://github.com/riscv/docs-resources) from `8e51e9f` to `1660fd9`.
- [Commits](riscv/docs-resources@8e51e9f...1660fd9)

---
updated-dependencies:
- dependency-name: docs-resources
  dependency-version: 1660fd9aa9a11ca337d8b0a7cf48c3560394a9d6
  dependency-type: direct:production
...

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Author: dependabot[bot]