Add improved docs

[wooorm]

Initial checklist

• [x] I read the support docs
• [x] I read the contributing guide
• [x] I agree to follow the code of conduct
• [x] I searched issues and couldn’t find anything (or linked relevant results below)
• [x] If applicable, I’ve added docs and tests

Description of changes

View rendered

Related-to: unifiedjs/unified#168.

/cc @nemo-omen @remcohaszing @ChristianMurphy @Murderlon @with-heart @joostdecock @mgan59

[codecov-commenter]

Codecov Report

Merging #22 (43571eb) into main (9735ba2) will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main       #22   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         2    +1     
  Lines           63        79   +16     
=========================================
+ Hits            63        79   +16     

Impacted Files	Coverage Δ
index.js	100.00% <100.00%> (ø)
lib/index.js	100.00% <100.00%> (ø)

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[wooorm]

Please take extra care reviewing this one friends, as it’s such a common use case!

[wooorm]

thanks for the feedback @with-heart!

[github-actions[bot]]

Hi! This was closed. Team: If this was merged, please describe when this is likely to be released. Otherwise, please add one of the no/* labels.