Update start message

Resources/Locale/en-US/game-ticking/game-rules/rule-dungeon.ftl

@@ -1,5 +1,5 @@
 dungeon-intro = NanoTrasen deep space scanners show that a powerful artifact lies buried deep within this asteroid. NanoTrasen seeks to possess this artifact, and with it to gain deserved ascendance over the rival corporations. Go bravely with NanoTrasen!
 
-dungeon-enter-announce = Good luck, team! Find us The Artifact!
+dungeon-enter-announce = Good luck, team! Find us the Amulet of Yendor!
 
 dungeon-report = The team of {$players} reached a maximum dungeon level of {$depth} and vanquished {$count} monsters.