update arb descriptions

lib/l10n/arb/app_en.arb

@@ -46,7 +46,7 @@
   },
   "select": "Select",
   "@select": {
-    "description": "Text displayed on the character selection page select button"
+    "description": "Text displayed on the character selection dialog - select button"
   },
   "space": "Space",
   "@space": {
@@ -54,11 +54,11 @@
   },
   "characterSelectionTitle": "Select a Character",
   "@characterSelectionTitle": {
-    "description": "Title text displayed on the character selection page"
+    "description": "Title text displayed on the character selection dialog"
   },
   "characterSelectionSubtitle": "There’s no wrong choice!",
   "@characterSelectionSubtitle": {
-    "description": "Text displayed on the selecting character dialog at game beginning"
+    "description": "Subtitle text displayed on the character selection dialog"
   },
   "gameOver": "Game Over",
   "@gameOver": {
@@ -124,4 +124,4 @@
   "@footerGoogleIOText": {
     "description": "Text shown on the footer which mentions Google I/O"
   }
-}
+}