[markdown mode] Fix mistake in prev patch
[markdown mode] Fix mistake in prev patch

Issue #4960

wingify/CodeMirror,MarcelGerber/CodeMirror,hackmdio/CodeMirror,SidPresse/CodeMirror,namin/CodeMirror,jayaprabhakar/CodeMirror,thomasjm/CodeMirror,mtaran-google/CodeMirror,notepadqq/CodeMirror,pabloferz/CodeMirror,jayaprabhakar/CodeMirror,hackmdio/CodeMirror,SidPresse/CodeMirror,notepadqq/CodeMirror,codio/CodeMirror,MarcelGerber/CodeMirror,dperetti/CodeMirror,nightwing/CodeMirror,nightwing/CodeMirror,pabloferz/CodeMirror,namin/CodeMirror,pabloferz/CodeMirror,dperetti/CodeMirror,nightwing/CodeMirror,SidPresse/CodeMirror,MarcelGerber/CodeMirror,codio/CodeMirror,ficristo/CodeMirror,jkaplon/CodeMirror,mtaran-google/CodeMirror,notepadqq/CodeMirror,thomasjm/CodeMirror,jkaplon/CodeMirror,wingify/CodeMirror,hackmdio/CodeMirror,thomasjm/CodeMirror,ficristo/CodeMirror,ficristo/CodeMirror,mtaran-google/CodeMirror,namin/CodeMirror,jkaplon/CodeMirror,dperetti/CodeMirror,codio/CodeMirror,jayaprabhakar/CodeMirror,wingify/CodeMirror