Fix incorrect link formatting

[revolter]

Preview: https://cadquery--843.org.readthedocs.build/en/843/intro.html

[codecov]

Codecov Report

Merging #843 (b271fa5) into master (93623fa) will not change coverage.
The diff coverage is n/a.

❗ Current head b271fa5 differs from pull request most recent head 4eb6e3c. Consider uploading reports for the commit 4eb6e3c to get more accurate results

@@           Coverage Diff           @@
##           master     #843   +/-   ##
=======================================
  Coverage   95.89%   95.89%           
=======================================
  Files          32       32           
  Lines        7594     7594           
  Branches      806      806           
=======================================
  Hits         7282     7282           
  Misses        184      184           
  Partials      128      128           

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[jmwright]

Thanks @revolter

[jmwright]

@adam-urbanczyk If you approve as well, feel free to merge.

[marcus7070]

Thankyou @revolter!