Fix doc errors in concepts and getting started

[sp1999]

Issue #, if available:

Description of changes:

Testing (if applicable):

Documentation added/planned (if applicable):

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (8d37124) 71.94% compared to head (0de91ee) 71.93%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6933      +/-   ##
==========================================
- Coverage   71.94%   71.93%   -0.01%     
==========================================
  Files         532      532              
  Lines       41583    41583              
==========================================
- Hits        29917    29914       -3     
- Misses       9989     9991       +2     
- Partials     1677     1678       +1     

see 1 file with indirect coverage changes

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[ahreehong]

/lgtm

[sp1999]

/approve

[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sp1999

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[ahreehong]

/cherry-pick release-0.18

[eks-distro-pr-bot]

@ahreehong: new pull request created: #7198

In response to this:

/cherry-pick release-0.18

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