time.3: Update ERRORS section

time() is now implemented using clock_gettime(2) instead of
gettimeofday(2).

Reviewed by:	debdrup
Fixes:		358ed16f75 Use clock_gettime(CLOCK_SECOND)
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D34438

lib/libc/gen/time.3

@@ -32,7 +32,7 @@
 .\"     @(#)time.3	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd July 18, 2003
+.Dd March 4, 2022
 .Dt TIME 3
 .Os
 .Sh NAME
@@ -64,7 +64,7 @@ is non-null.
 The
 .Fn time
 function may fail for any of the reasons described in
-.Xr gettimeofday 2 .
+.Xr clock_gettime 2 .
 .Sh SEE ALSO
 .Xr clock_gettime 2 ,
 .Xr gettimeofday 2 ,