Fix 2.6.0 changelog (#3562)
Fix 2.6.0 changelog (#3562)

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