Correct efi(8) reference.

Submitted by:	Gordon Bergling
Differential Revision:	https://reviews.freebsd.org/D24441

share/man/man4/smbios.4

@@ -23,7 +23,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd April 6, 2020
+.Dd April 22, 2020
 .Dt SMBIOS 4
 .Os
 .Sh NAME
@@ -46,7 +46,7 @@ smbios_load="YES"
 .Sh DESCRIPTION
 The System Management BIOS (SMBIOS) describes hardware components.
 .Sh SEE ALSO
-.Xr efi 4
+.Xr efi 8
 .Rs
 .%T System Management BIOS (SMBIOS) Reference Specification
 .%N DMTF DSP0134