CONFIGURATION.md: add info about read-repairs
CONFIGURATION.md: add info about read-repairs

Thib17/biggraphite,Thib17/biggraphite,Thib17/biggraphite,iksaif/biggraphite,criteo/biggraphite,iksaif/biggraphite,Thib17/biggraphite,iksaif/biggraphite,iksaif/biggraphite,criteo/biggraphite,criteo/biggraphite,criteo/biggraphite