Fix typos

[kieranbarker]

This is not me being a Grammar Nazi. Just saw a few typos while I was using your site to help me figure out my own Eleventy build, so thought I'd make a pull request ❤️

[netlify[bot]]

Deploy request for hawksworx rejected.

Rejected with commit c47f69952f8305c66ce2e2b483ec004c91a29ac8

https://docs.netlify.com/configure-builds/environment-variables/#sensitive-variable-policy

[philhawksworth]

Oh, sloppy! Thanks ever so much @kieranbarker !