The previous wording implied that omitting "params" defaulted to auto.
"edh" alone enables EDH in auto mode, while leaving the directive out
keeps EDH disabled (equivalent to no edh / edh params none).

OK?

diff --git a/relayd.conf.5 b/relayd.conf.5
index 6e95e9a..eb530ea 100644
--- a/relayd.conf.5
+++ b/relayd.conf.5
@@ -1003,12 +1003,15 @@ In
 .Ic legacy
 mode, a 1024 bit ephemeral key is used.
 If
-.Ic params
-is omitted,
-.Ic auto
+.Ic edh
+is given without
+.Ic params ,
+.Dq auto
 is used.
 The default is
-.Ic no edh .
+.Ic no edh 
+and is equivalent to
+.Ic edh params none .
 .It Ic keypair Ar name
 .It Ic keypair Ar name Op Ic cert Ar "path"
 .It Ic keypair Ar name Op Ic key Ar "path"