Update binning documentation

[searscr]

Description of work:

Update the user documentation to explain how the different binning parameters are used in quicknxs

Check all that apply:

• added release notes
  (if not, provide an explanation in the work description)
• updated documentation
• Source added/refactored
• Added unit tests
• Added integration tests

References:

• Links to IBM EWM items: EWM 8236
• Links to related issues or pull requests:

Manual test for the reviewer

(instructions to set up the environment)

Documentation update only, no testing required.

Check list for the reviewer

• release notes updated,
  or an explanation is provided as to why release notes are unnecessary
• best software practices
  • clearly named variables (better to be verbose in variable names)
  • code comments explaining the intent of code blocks
• All the tests are passing
• The documentation is up to date
• code comments added when explaining intent

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.54%. Comparing base (8cf2364) to head (94fef13).

Additional details and impacted files

@@           Coverage Diff           @@
##             next     #138   +/-   ##
=======================================
  Coverage   60.54%   60.54%           
=======================================
  Files          34       34           
  Lines        6648     6648           
=======================================
  Hits         4025     4025           
  Misses       2623     2623           

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