Fixed openSUSE issues

install.sh

@@ -123,8 +123,12 @@ install() {
     elif has_command grub-mkconfig; then
       grub-mkconfig -o /boot/grub/grub.cfg
     elif has_command grub2-mkconfig; then
+      if [ $(which zypper &>/dev/null) ]; then
+        grub2-mkconfig -o /boot/grub2/grub.cfg
+      elif [ $(which dnf &>/dev/null) ]; then
         grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg
       fi
+    fi
 
     # Success message
     prompt -s "\n * All done!"