Clarified sample qc statistics (#1612)
Clarified sample qc statistics (#1612)

* Clarified sample qc statistics

* Fix sample qc docs

danking/hail,hail-is/hail,cseed/hail,danking/hail,hail-is/hail,danking/hail,cseed/hail,danking/hail,danking/hail,cseed/hail,danking/hail,danking/hail,hail-is/hail,cseed/hail,cseed/hail,cseed/hail,danking/hail,hail-is/hail,hail-is/hail,cseed/hail,hail-is/hail,hail-is/hail,hail-is/hail,cseed/hail