fix non-node.js doctype check
fix non-node.js doctype check

fellipecouto96/bootlint,twbs/bootlint,2947721120/ubiquitous-octo-kumquat,zacechola/bootlint,techkrish/bootlint,zacechola/bootlint,fellipecouto96/bootlint,kkirsche/bootlint,fellipecouto96/bootlint,twbs/bootlint,techkrish/bootlint,cnbin/bootlint,iamphill/bootlint,techkrish/bootlint,freezy-sk/bootlint,2947721120/ubiquitous-octo-kumquat,chrismbarr/bootlint,cnbin/bootlint,chrismbarr/bootlint,chrismbarr/bootlint,freezy-sk/bootlint,evilemon/bootlint,evilemon/bootlint,angeliaz/bootlint,cnbin/bootlint,kkirsche/bootlint,iamphill/bootlint,zacechola/bootlint,kkirsche/bootlint,iamphill/bootlint,angeliaz/bootlint,2947721120/ubiquitous-octo-kumquat,evilemon/bootlint,freezy-sk/bootlint,angeliaz/bootlint