fix api show doc and add api configure command

[lalmeras]

It seems that api show and api configure commands are incorrectly documented.

Previously:

• Showing an API: erronously refer to api configure
• api configure: not present in doc

Fix:

• Showing an API: refer to api show
• api configure: added

[danielgtaylor]

Thank you!

[codecov]

Codecov Report

Merging #184 (a4c8eb1) into main (ee2e1ae) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #184   +/-   ##
=======================================
  Coverage   74.94%   74.94%           
=======================================
  Files          25       25           
  Lines        3405     3405           
=======================================
  Hits         2552     2552           
  Misses        655      655           
  Partials      198      198           

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