chore(deps): bump remark-smartypants from 2.0.0 to 2.1.0 (#755)

Bumps [remark-smartypants](https://github.com/silvenon/remark-smartypants) from 2.0.0 to 2.1.0.
- [Release notes](https://github.com/silvenon/remark-smartypants/releases)
- [Commits](https://github.com/silvenon/remark-smartypants/compare/v2.0.0...v2.1.0)

---
updated-dependencies:
- dependency-name: remark-smartypants
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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