SEO and meta-tag specificity

[jakehlee]

There may be a benefit to implementing this (< 1hr) so that the site unfurls on Slack, etc. when linked.

e.g. https://whitep4nth3r.com/blog/level-up-your-link-previews-in-slack/

[jakebox]

@hibaa8 If you want a challenge feel free to make a branch and give this a try.