Fix link to documentation in README.

[simanglam]

Description

One of the links to the documentation in README is broken. I just correct the URL.

Check List (Check all the applicable boxes)

• I understand that my contributions needs to pass the checks.
• If I created new functions / methods, I documented them and add type hints.
• If I modified already existing code, I updated the documentation accordingly.
• The title of my pull request is a short description of the requested changes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (648d7ff) 79.57% compared to head (2eea345) 79.57%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #368   +/-   ##
=======================================
  Coverage   79.57%   79.57%           
=======================================
  Files          22       22           
  Lines        1797     1797           
=======================================
  Hits         1430     1430           
  Misses        367      367           

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[jeertmans]

Indeed, good catch, thanks!