Check for broken links on the website

[jeeyyy]

Options:

• Check if this can be done pre-deploy
• Check if this can be done post-deploy

Tools (ideas)

• https://www.npmjs.com/package/broken-link-checker

Note: this should be a separate CI step.

[Jym77]

remark-lint has a plugin for this, which would allow direct checking on the markdown. https://github.com/davidtheclark/remark-lint-no-dead-urls

Plus, linting the markdown directly could be a good idea in general.