📚 DOCS: Fix docstring

[tsutsu3]

before:

after:

[tsutsu3]

Ref: actions/setup-python#171

[hukkin]

Maybe change pypy3 to pypy-3.6 or pypy-3.7 (or both) in CI as suggested in actions/setup-python#171 (comment) ? That seems like the better syntax to me. It wasn't used originally here because it didn't exist yet at the time.

[codecov]

Codecov Report

Merging #99 (6a4ede2) into master (f016794) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #99      +/-   ##
==========================================
- Coverage   96.49%   96.49%   -0.01%     
==========================================
  Files          69       69              
  Lines        2911     2910       -1     
==========================================
- Hits         2809     2808       -1     
  Misses        102      102              

Flag	Coverage Δ
pytests	96.49% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
markdown_it/main.py	90.98% <ø> (ø)
markdown_it/helpers/parse_link_label.py	100.00% <0.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f016794...d2adc4b. Read the comment docs.

[tsutsu3]

Ref: actions/setup-python#171

It has been fixed to work with pypy3

[chrisjsewell]

cheers, note it won't actually show in the documentation site until #101 is fixed