improved maintenance.py

games/rpg/dungeon_quest.md

@@ -4,8 +4,8 @@ _Smashing more monsters than ever in this turn-based dungeon crawling game._
 
 - Home: https://github.com/guillaume-gouchon/dungeonquest
 - Download: https://play.google.com/store/apps/details?id=com.giggs.heroquest
+- Platform: Android
 - State: mature
-- Keywords: android
 - Code repository: https://github.com/guillaume-gouchon/dungeonquest
 - Code language: Java
 - Code license: MIT