Update the Jupyter Book

[FanwangM]

• Clean up
• Add API documentation
• Fix equation rendering errors

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.01%. Comparing base (ba03647) to head (d83c667).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #263   +/-   ##
=======================================
  Coverage   95.01%   95.01%           
=======================================
  Files           9        9           
  Lines        1024     1024           
=======================================
  Hits          973      973           
  Misses         51       51           

Files with missing lines	Coverage Δ
selector/measures/converter.py	98.86% <ø> (ø)
selector/measures/diversity.py	98.58% <ø> (ø)
selector/measures/similarity.py	76.38% <ø> (ø)
selector/methods/similarity.py	94.73% <ø> (ø)