Fix Typo
Fix Typo

It's `editor.insertSpaces`. 
P.S: I should see that option around [here](https://github.com/vuejs/vetur/blob/master/server/src/modes/script/javascript.ts#L398) buh it isn't there???
HerringtonDarkholme/vetur,HerringtonDarkholme/vetur,HerringtonDarkholme/vetur