needs release/tag for env var feature

[automaticgiant]

i'm not using it, but was testing this and noticed i needed to use ref master for it. maybe this is more a limitation of github that it pulls your docs off main?

[automaticgiant]

same for regex feature (which i plan to start using today)

[automaticgiant]

key-path incorrectly documented as key-path-pattern
will be using a hard sha ref instead of main

[automaticgiant]

@pietrobolcato what's the release process if we contribute the doc fix for this and maybe #16 as well?