contrib: update example configs

- check command removed
- disable modules by default (void)
- OpenSSH requires absolute path (void)
- Read keymap from env (alpine)
- minor cleanup/reordering for consistency

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

contrib/void/finit.d/available/modules.conf

@@ -1,6 +1,6 @@
 ## Linux kernel modules to load
 #module fbcon
-module button
-module evdev
-module mousedev
-module 8139cp
+#module button
+#module evdev
+#module mousedev
+#module 8139cp

contrib/void/finit.d/available/ntpd.conf

@@ -1,2 +1,2 @@
 # Silly Busybox ntpd has no option to use syslog when running in foreground
-service [2345] log <pid/syslogd> ntpd -n -N -p pool.ntp.org -- NTP daemon
+service [2345] <pid/syslogd> log ntpd -n -N -p pool.ntp.org -- NTP daemon

contrib/void/finit.d/available/sshd.conf

@@ -1,2 +1,2 @@
 # Start SSH daemon as soon as basic networking comes up
-service [2345] sshd -D -- OpenSSH daemon
+service [2345] /usr/sbin/sshd -D -- OpenSSH daemon