Update links in README

[yuxiaoy1]

No description provided.

[codecov-commenter]

Codecov Report

Merging #79 (85f9f7b) into main (1886b76) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #79   +/-   ##
=======================================
  Coverage   89.13%   89.13%           
=======================================
  Files           1        1           
  Lines          92       92           
  Branches       18       18           
=======================================
  Hits           82       82           
  Misses          4        4           
  Partials        6        6           

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[miguelgrinberg]

Thanks!