doc: switch to dune syntax for (documentation) (#2477)
doc: switch to dune syntax for (documentation) (#2477)

Signed-off-by: Etienne Millon <b1c1d8736f20db3fb6c1c66bb1455ed43909f0d8@emillon.org>
janestreet/jbuilder,dra27/jbuilder,dra27/jbuilder,janestreet/jbuilder,dra27/jbuilder,janestreet/jbuilder,janestreet/jbuilder,dra27/jbuilder,janestreet/jbuilder,dra27/jbuilder,dra27/jbuilder,janestreet/jbuilder