Add schema description for hints text field

src/open_dread_rando/files/schema.json

@@ -293,7 +293,8 @@
                         "type": ["string", "array"],
                         "items": {
                             "type": "string"
-                        }
+                        },
+                        "description": "If a string, the Adam dialogue will be replaced with a single page containing the string. If an array, a page will be created for each element."
                     }
                 },
                 "required": [