Use consistent bash5 style for conditionals and quoting

install/config/hardware/fix-surface-keyboard.sh

@@ -2,17 +2,17 @@
 # Module list derived from Chris McLeod's manual install instructions
 # https://chrismcleod.dev/blog/installing-arch-linux-with-secure-boot-on-a-microsoft-surface-laptop-studio/
 product_name="$(cat /sys/class/dmi/id/product_name 2>/dev/null)"
-if [[ "$product_name" =~ Surface ]]; then
+if [[ $product_name =~ Surface ]]; then
   echo "Detected Surface Device"
 
   # Modules already exist in the rootfs for the default kernel.
-  if [[ "$product_name" != "Surface Laptop 3" ]]; then
+  if [[ $product_name != "Surface Laptop 3" ]]; then
     echo "Untested Surface Device: $product_name, additional modules may be required for your device."
   fi
 
   echo "Attempting to autodetect required pinctrl module"
   pinctrl_module=$(lsmod | grep pinctrl_ | cut -f 1 -d" ")
-  if [[ -z "$pinctrl_module" ]]; then
+  if [[ -z $pinctrl_module ]]; then
     echo "Failed to autodetect pinctrl module."
   else
     echo "Detected pinctrl module: $pinctrl_module"