make_dev.9: Use .Dx and fix a typo.

diff --git a/share/man/man9/make_dev.9 b/share/man/man9/make_dev.9
index d9694eb..37e727e 100644 (file)
--- a/share/man/man9/make_dev.9
+++ b/share/man/man9/make_dev.9
@@ -315,6 +315,7 @@ and
 functions first appeared in
 .Fx 4.0 .
 .Pp
-A major overhaul of these functions occured in DragonFly 2.3 with the addition
-of
+A major overhaul of these functions occurred in
+.Dx 2.3
+with the addition of
 .Xr devfs 5 .