[Hou+] Add special 'EXIT' Back button to text-edits.json

- Hou+ Special 'EXIT' Back button - this back button is shown during the 'Scenario Unlock' menu, and for some reason says 'EXIT' (in English) when the language is set to Japanese

assets/text-edits.json

@@ -70,6 +70,13 @@
         "NewJapanese": "戻る",
         "Discriminator": 1
     },
+    {
+        "Comment": "Hou+ Special 'EXIT' Back button - this back button is shown during the 'Scenario Unlock' menu, and for some reason says 'EXIT' (in English) when the language is set to Japanese",
+        "CurrentEnglish": "Back",
+        "CurrentJapanese": "EXIT",
+        "NewEnglish": "Back",
+        "NewJapanese": "EXIT"
+    },
     {
         "CurrentEnglish": "Staff Room",
         "CurrentJapanese": "スタッフルーム",