Update doc strings for list subtools

[singhd789]

Describe your changes

Update documentation for fre list subtools to fit the format for the fre-cli chatbot

Issue ticket number and link (if applicable)

Starts #955

Checklist before requesting a review

• I ran my code
• I tried to make my code readable
• I tried to comment my code
• I wrote a new test, if applicable
• I wrote new instructions/documentation, if applicable
• I ran pytest and inspected it's output
• I ran pylint and attempted to implement some of it's feedback
• No print statements; all user-facing info uses logging module

Note: If you are a code maintainer updating the tag or releasing a new fre-cli version, please use the release_procedure.md template. To quickly use this template, open a new pull request, choose your branch, and add ?template=release_procedure.md to the end of the url.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.09%. Comparing base (e24a5d8) to head (49c22d4).
⚠️ Report is 7 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #959   +/-   ##
=======================================
  Coverage   82.09%   82.09%           
=======================================
  Files          67       67           
  Lines        3736     3736           
=======================================
  Hits         3067     3067           
  Misses        669      669           

Flag	Coverage Δ
unittests	82.09% <ø> (ø)

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Files with missing lines	Coverage Δ
fre/list_/list_experiments_script.py	100.00% <ø> (ø)
fre/list_/list_platforms_script.py	100.00% <ø> (ø)
fre/list_/list_pp_components_script.py	95.65% <ø> (ø)

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