Fix vim doc typos
Fix vim doc typos

chambart/merlin,ocaml/merlin,rgrinberg/merlin,the-lambda-church/merlin,chambart/merlin,the-lambda-church/merlin,dra27/merlin,ocaml/merlin,dra27/merlin,fxfactorial/merlin,chriskonstad/merlin,dra27/merlin,rgrinberg/merlin,fxfactorial/merlin,chambart/merlin,chambart/merlin,ocaml/merlin,ocaml/merlin,chriskonstad/merlin,fxfactorial/merlin,rgrinberg/merlin,fxfactorial/merlin,the-lambda-church/merlin,dra27/merlin,rgrinberg/merlin