Minor improvements

Replaced which with command -v since which is already deprecated
Replaced lsb_release -d with cat /etc/os-release since this method is more universal
Fixed a couple of typos in the PortProton installation script

data_from_portwine/scripts/runlib

@@ -19,7 +19,7 @@ if [[ $(id -u) = 0 ]] ; then
     zenity --error --text "Do not run this script as root!"
     exit 1
 fi
-if [[ "${s_install}" != "1" && ! -x "`which "zenity" 2>/dev/null`" ]] ; then
+if [[ "${s_install}" != "1" && ! -x "`command -v "zenity" 2>/dev/null`" ]] ; then
     echo "You will need to install: zenity, and restart the port."
     xdg-open "https://linux-gaming.ru/portproton/" > /dev/null 2>&1 & exit 0
 fi
@@ -227,7 +227,7 @@ start_portwine () {
             setxkbmap us,ru
         fi
     fi
-    if [[ -x "`which "gamemoderun" 2>/dev/null`" ]] && [[ "$PW_USE_GAMEMODE" = "1" ]] ; then
+    if [[ -x "`command -v "gamemoderun" 2>/dev/null`" ]] && [[ "$PW_USE_GAMEMODE" = "1" ]] ; then
         export GAMEMODERUN=1
         PW_GAMEMODERUN_SLR="gamemoderun"
         # if [[ ! -z "${PW_LD_PRELOAD}" ]]