Don't use backticks, use $()

This is a minor style fix.

modules.d/40network/install

@@ -1,7 +1,7 @@
 #!/bin/bash
 dracut_install ip dhclient hostname
 # Include wired net drivers, excluding wireless
-for modname in `find "/lib/modules/$kernel/kernel/drivers" -name '*.ko'`; do
+for modname in $(find "/lib/modules/$kernel/kernel/drivers" -name '*.ko'); do
   if nm -uPA $modname | grep -q eth_type_trans; then
     if echo "$modname" | grep -q wireless; then
       continue