chore(deps-dev): bump docsy from dc94be3 to 0e2ad18 in /site

Bumps [docsy](https://github.com/google/docsy) from `dc94be3` to `0e2ad18`.
- [Release notes](https://github.com/google/docsy/releases)
- [Commits](google/docsy@dc94be3...0e2ad18)

---
updated-dependencies:
- dependency-name: docsy
  dependency-version: 0e2ad1805410641c8c6200ded66af5d7b69bc847
  dependency-type: direct:development
...

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

Author: dependabot[bot]