[CI] Makefile: Misleading message for `check-deps`

The current setup uses an npm packaged Hugo binary and no longer requires a locally installed version of Hugo. However, the echo message for `check-deps` doesn't reflect that, instead echoing
```
Checking if 'npm' and local 'hugo' binary are present...
```

### Desired Behavior
The echo message should be changed to be more accurate

---

#### Contributor Guide and Resources
- 📚 [Instructions for contributing to documentation](https://github.com/layer5io/docs/blob/master/CONTRIBUTING.md)
- Layer5 documentation [site](https://docs.layer5.io) and [source](https://github.com/layer5io/docs/)
- 🎨 Wireframes and [designs for Layer5 site](https://www.figma.com/file/5ZwEkSJwUPitURD59YHMEN/Layer5-Designs) in Figma [(open invite)](https://www.figma.com/team_invite/redeem/GvB8SudhEOoq3JOvoLaoMs)
- 🙋🏾🙋🏼 Questions: [Layer5 Discussion Forum](https://discuss.layer5.io) and [Layer5 Community Slack](http://slack.layer5.io)