mwan3: fix whitspace

Signed-off-by: Florian Eckert <fe@dev.tdt.de>

net/mwan3/files/etc/hotplug.d/iface/16-mwan3-user

@@ -3,7 +3,7 @@
 [ -f "/etc/mwan3.user" ] && {
 	. /lib/functions.sh
 	. /lib/mwan3/mwan3.sh
-        initscript=/etc/init.d/mwan3
+	initscript=/etc/init.d/mwan3
 	. /lib/functions/procd.sh
 
 	[ "$MWAN3_SHUTDOWN" != 1 ] && procd_lock