Fixed missing features list for GPL module (#173)

Per Nvidia README the previous list was all implemented,
remaining missing features are not relevant to all users.

Suggest also making GPL the default but did not want to put that
into this change.

PKGBUILD

@@ -169,7 +169,7 @@ if [ -e options ]; then
       if [ -z "$_open_source_modules" ]; then
         msg2 " - Open source kernel modules available - "
         warning "IT ONLY OFFERS SUPPORT FOR TURING AND NEWER, AND DOESN'T OFFER ALL THE FEATURES OF THE PROPRIETARY ONE."
-        warning "PRIME SUPPORT, VRR AND POWER MANAGEMENT ARE NOTABLY MISSING CURRENTLY."
+        warning "SLI, G-Sync on notebooks and virtual GPU support are notably missing."
         plain "Do you want to use it instead of the proprietary one?"
         read -rp "`echo $'    > N/y : '`" _open_source;
         if [[ "$_open_source" =~ [yY] ]]; then