DOCS: fix issue #128 (#if and #either don't work)
DOCS: fix issue #128 (#if and #either don't work)

NikolayShubenkovProgSchool/red,red-eco/red,vehar/red,NikolayShubenkovProgSchool/red,iArnold/red,iArnold/red,rheber/red,vehar/red,red-eco/red,rheber/red