Fix trailing slash 404 issue

[SamSverko]

/contact = 200
/contact/ = 404

Need to figure out a way for Next.js to handle trailing slash links to direct to the page instead of 404.

[SamSverko]

https://nextjs.org/docs/api-reference/next.config.js/exportPathMap might be the answer here. But this may not work for dynamic pages...