S3 Config Documentation Update

[goabv]

Issue #, if available:

Description of changes: Updating S3 configuration doc to encourage using CRT S3 client

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[codecov-commenter]

Codecov Report

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

Project coverage is 0.08%. Comparing base (d0fb0a0) to head (977e3fa). Report is 301 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #8579   +/-   ##
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  Coverage     0.08%   0.08%           
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  Files          208     208           
  Lines        16716   16716           
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  Hits            14      14           
  Misses       16702   16702           

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[nateprewitt]

Thanks for the PR, @goabv. Most of this information is already in the CLI v2 docs here. We won't want to add this to the CLI v1 docs, as this PR does, because the CRT isn't available by default.

Was there something specifically insufficient with the current docs? Any changes should be made here on the v2 branch.