hcons: Fix manpage typo

Submitted by:	Shunchao Hu <ankohuu_outlook.com>
Reviewed by:	wulf, gbe
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D28294

share/man/man4/hcons.4

@@ -23,7 +23,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 14, 2020
+.Dd January 23, 2021
 .Dt HCONS 4
 .Os
 .Sh NAME
@@ -45,7 +45,7 @@ Alternatively, to load the driver as a
 module at boot time, place the following line in
 .Xr loader.conf 5 :
 .Bd -literal -offset indent
-hgame_load="YES"
+hcons_load="YES"
 .Ed
 .Sh DESCRIPTION
 The