docs(Document): use only https sources

[layershifter]

Fixes #3163.

[codecov-io]

Codecov Report

Merging #3178 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3178   +/-   ##
=======================================
  Coverage   99.92%   99.92%           
=======================================
  Files         163      163           
  Lines        2746     2746           
=======================================
  Hits         2744     2744           
  Misses          2        2

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[levithomason]

Released in [email protected].