docs(contributing): fix broken link

[bearomorphism]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.68%. Comparing base (120d514) to head (e3e838c).
⚠️ Report is 856 commits behind head on master.

Additional details and impacted files

@@ Coverage Diff @@## master #1684 +/- ## ========================================== + Coverage 97.33% 98.68% +1.34%  ========================================== Files 42 60 +18 Lines 2104 2656 +552 ========================================== + Hits 2048 2621 +573 + Misses 56 35 -21 

Flag	Coverage Δ
unittests	98.68% <ø> (+1.34%)	⬆️

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[woile]

Maybe we should automate check for broken links (and run with a cron) using https://github.com/lycheeverse/lychee

[bearomorphism]

Maybe we should automate check for broken links (and run with a cron) using https://github.com/lycheeverse/lychee

sounds good if it's not expensive