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* Extended the CV preprocessing section with more details and refactored the example

* added padding to the CV section, though it is a special case

* Added a tip about post processing methods

* make style

* link update

* Apply suggestions from review
Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com>

* review feedback
Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com>