Fix quasi88 bios filenames

from quasi88-libretro-master/src/LIBRETRO/libretro.c:
382:      load_system_file("n88knj1.rom",  kanji_rom[0][0], 0x20000);
383:      load_system_file("n88knj2.rom",  kanji_rom[1][0], 0x20000);

dist/info/quasi88_libretro.info

@@ -33,11 +33,11 @@ firmware5_opt = "true"
 firmware6_desc = "disk.rom (Sub BIOS)"
 firmware6_path = "quasi88/disk.rom"
 firmware6_opt = "true"
-firmware7_desc = "n88knji1.rom (Kanji Font 1)"
-firmware7_path = "quasi88/n88knji1.rom"
+firmware7_desc = "n88knj1.rom (Kanji Font 1)"
+firmware7_path = "quasi88/n88knj1.rom"
 firmware7_opt = "true"
-firmware8_desc = "n88knji2.rom (Kanji Font 2)"
-firmware8_path = "quasi88/n88knji2.rom"
+firmware8_desc = "n88knj2.rom (Kanji Font 2)"
+firmware8_path = "quasi88/n88knj2.rom"
 firmware8_opt = "true"
 firmware9_desc = "n88jisho.rom (Jisho)"
 firmware9_path = "quasi88/n88jisho.rom"