Bump docs-resources from 707d21c to 8e51e9f

Bumps [docs-resources](https://github.com/riscv/docs-resources) from `707d21c` to `8e51e9f`.
- [Commits](riscv/docs-resources@707d21c...8e51e9f)

---
updated-dependencies:
- dependency-name: docs-resources
  dependency-version: 8e51e9f1934980ef4d5f4d2aa811237207d10db3
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]