fix: typo nodiscord (#56)

Author: sogladev

src/ZoneDifficulty.h

@@ -174,7 +174,7 @@ class ZoneDifficulty
     bool HasMythicmode(int8 mode) { return (mode & MODE_HARD) == MODE_HARD; }
     bool HasCompletedFullTier(uint32 category, uint32 playerGUID);
     bool OverrideModeMatches(uint32 instanceId, uint32 spellId, uint32 mapId);
-    [[nodiscord]] bool CheckCompletionStatus(Creature* creature, Player* player, uint32 category) const;
+    [[nodiscard]] bool CheckCompletionStatus(Creature* creature, Player* player, uint32 category) const;
     [[nodiscard]] bool IsValidNerfTarget(Unit* target);
     [[nodiscard]] bool VectorContainsUint32(std::vector<uint32> vec, uint32 element);
     [[nodiscard]] bool IsMythicmodeMap(uint32 mapid);