Fix the syntax error in hu_HU.json

INSTALL/grub/distro/fwts.cfg

+set label="writable"
+
+menuentry 'Firmware Test Suite' --class ubuntu --class gnu-linux --class gnu --class os {
+    set root='vtimghd,4'
+    linux   /boot/vmlinuz root=LABEL=$label ro console=tty1 console=ttyS0 quiet
+    initrd  /boot/initrd.img
+}
+
+menuentry 'Firmware Test Suite (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {    
+    set root='vtimghd,4'    
+    echo    'Loading Linux ...'
+    linux   /boot/vmlinuz root=LABEL=$label ro recovery nomodeset
+    echo    'Loading initial ramdisk ...'
+    initrd  /boot/initrd.img
+}

INSTALL/grub/menu/hu_HU.json

-
+{
     "VTLANG_LANGUAGE_NAME": "Hungarian (Magyar)",
     
     "VTLANG_STR_HOTKEY_LIST": "L:Nyelv  F1:Súgó  F2:Tallóz  F3:Listanézet  F4:Helyi indítás  F5:Eszközök  F6:Bővített menü",