update .merlin for js
update .merlin for js

edwintorok/ocaml-cohttp,mor1/ocaml-cohttp,Drup/ocaml-cohttp,marklrh/ocaml-cohttp,dsheets/ocaml-cohttp,inhabitedtype/ocaml-cohttp,inhabitedtype/ocaml-cohttp,marklrh/ocaml-cohttp,dsheets/ocaml-cohttp,marklrh/ocaml-cohttp,mor1/ocaml-cohttp,mor1/ocaml-cohttp,edwintorok/ocaml-cohttp,edwintorok/ocaml-cohttp,Drup/ocaml-cohttp,Drup/ocaml-cohttp,inhabitedtype/ocaml-cohttp,dsheets/ocaml-cohttp