Correct documentation for QualifyingElement options
Correct documentation for QualifyingElement options

Add missing `element_` portion of configuration options for
`QualifyingElement`.

Change-Id: I6948ad1a2b0496414159785280d525868202f0f0
Reviewed-on: http://gerrit.causes.com/44371
Reviewed-by: Joe Lencioni <1dd72cf724deaab5db236f616560fc7067b734e1@brigade.com>
Tested-by: jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@brigade.com>

artemartemov/scss-lint-hdm