Changed the game name "Sonic World Adventure" to "Sonic Unleashed" in Japanese installer introduction text (#557)

* Update locale.cpp

Changed Japanese installer introduction text.

* Moved line break location and changed "北米" to US

* Reverting US to 北米 and capitalizing the game name

Author: Kuid0us

UnleashedRecomp/locale/locale.cpp

@@ -304,7 +304,7 @@ std::unordered_map<std::string_view, std::unordered_map<ELanguage, std::string>>
         "Installer_Page_Introduction",
         {
             { ELanguage::English,  "Welcome to\nUnleashed Recompiled!\n\nYou'll need an Xbox 360 copy\nof Sonic Unleashed in order to proceed with the installation." },
-            { ELanguage::Japanese, "Unleashed Recompiledへようこそ！\nインストールにはXbox 360[版:ばん]の\n「ソニック ワールドアドベンチャー」\nが必要です" },
+            { ELanguage::Japanese, "Unleashed Recompiledへようこそ！\nインストールには\n[北米版:ほくべいばん]またはEU[版:ばん]のXbox 360[用:よう]\n「SONIC UNLEASHED」が[必要:ひつよう]です" },
             { ELanguage::German,   "Willkommen zu\nUnleashed Recompiled!\nEs wird eine Xbox 360 Kopie von Sonic Unleashed benötigt um mit der Installation fortfahren zu können." },
             { ELanguage::French,   "Bienvenue sur\nUnleashed Recompiled !\n\nVous aurez besoin d'une copie de Sonic Unleashed pour Xbox\n360 pour procéder à l'installation." },
             { ELanguage::Spanish,  "¡Bienvenido a\nUnleashed Recompiled!\n\nNecesitas una copia de\nSonic Unleashed de Xbox 360\npara continuar con la instalación." },