Trivial change / forced-commit to document prior change that slipped in

without a commit message...

Use sbuf_new() + SYSCTL_OUT() instead of wiring the userland buffer and
using sbuf_new_for_sysctl().  The preallocated 256 byte buffer is always
going to be big enough to hold these results, and this should be more
efficient than wiring the old buffer.

sys/kern/kern_et.c

@@ -235,7 +235,7 @@ et_free(struct eventtimer *et)
 	return (0);
 }
 
-/* Report list of supported event timers hardware via sysctl. */
+/* Report list of supported event timer hardware via sysctl. */
 static int
 sysctl_kern_eventtimer_choice(SYSCTL_HANDLER_ARGS)
 {