Fix quoted strings with empty delimiter (#1423)
Fix quoted strings with empty delimiter (#1423)

As specified in the tests added in #1405, the output should be
`{%ext|payload|}`, not `{%ext |payload|}`. This removes the extra space
and fixes the tests on 4.11.
ocaml-ppx/ocamlformat,ocaml-ppx/ocamlformat,ocaml-ppx/ocamlformat