Add less to available syntaxes
Add less to available syntaxes

gucong3000/stylelint,gucong3000/stylelint,heatwaveo8/stylelint,hudochenkov/stylelint,stylelint/stylelint,gucong3000/stylelint,gaidarenko/stylelint,hudochenkov/stylelint,heatwaveo8/stylelint,gaidarenko/stylelint,stylelint/stylelint,stylelint/stylelint,gaidarenko/stylelint,hudochenkov/stylelint,heatwaveo8/stylelint,stylelint/stylelint