Core/packets: fixed a typo in health frequent packet class name

src/server/game/Server/Packets/MiscPackets.cpp

@@ -225,8 +225,7 @@ WorldPacket const* WorldPackets::Misc::SetMovementAnimKit::Write()
     return &_worldPacket;
 }
 
-
-WorldPacket const* WorldPackets::Misc::UnitHealthFrquent::Write()
+WorldPacket const* WorldPackets::Misc::UnitHealthFrequent::Write()
 {
     _worldPacket << UnitGUID.WriteAsPacked();
     _worldPacket << int32(Health);

src/server/game/Server/Packets/MiscPackets.h

@@ -271,10 +271,10 @@ namespace WorldPackets
             uint16 AnimKitID = 0;
         };
 
-        class UnitHealthFrquent final : public ServerPacket
+        class UnitHealthFrequent final : public ServerPacket
         {
         public:
-            UnitHealthFrquent() : ServerPacket(SMSG_UNIT_HEALTH_FREQUENT, 12) { }
+            UnitHealthFrequent() : ServerPacket(SMSG_UNIT_HEALTH_FREQUENT, 12) { }
 
             WorldPacket const* Write() override;