editor: improve syntax highlighting
editor: improve syntax highlighting

beancount/fava,aumayr/beancount-web,yagebu/fava,yagebu/fava,yagebu/fava,beancount/fava,aumayr/beancount-web,aumayr/beancount-web,yagebu/fava,beancount/fava,yagebu/fava,aumayr/beancount-web,beancount/fava,beancount/fava