Add "Adaptive versus non-Adaptive Experiment Design" doc

[mpolson64]

Differential Revision: D74083340

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This pull request was exported from Phabricator. Differential Revision: D74083340

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D74083340

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D74083340

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D74083340

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D74083340

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 96.02%. Comparing base (b0a940b) to head (332be96).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3721   +/-   ##
=======================================
  Coverage   96.02%   96.02%           
=======================================
  Files         549      549           
  Lines       54289    54289           
=======================================
  Hits        52132    52132           
  Misses       2157     2157           

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