Update core-restore-from-backup.sh

check for PVE

misc/core-restore-from-backup.sh

@@ -1,5 +1,6 @@
 #!/usr/bin/env bash
 clear
+if command -v pveversion >/dev/null 2>&1; then echo -e "⚠️  Can't Run from the Proxmox Shell"; exit; fi
 YW=$(echo "\033[33m")
 BL=$(echo "\033[36m")
 RD=$(echo "\033[01;31m")