Corrected Mavka Card item bonus (#2597)

* Fixes #2594.
* The item bonus should increase MATK damage for Fire and Earth.
Thanks to @uddevil!

db/re/item_db.txt

@@ -11433,7 +11433,7 @@
 27158,Les_Card,Les Card,6,20,,10,,,,,,,,32,,,,,{ bonus2 bSubEle,Ele_Wind,30; },{},{}
 27159,Uzhas_Card,Uzhas Card,6,20,,10,,,,,,,,769,,,,,{ bonus2 bMagicAddRace,RC_Demon,(getrefine() >= 9 ? 15 : 10); },{},{}
 27160,Vavayaga_Card,Vavayaga Card,6,20,,10,,,,,,,,64,,,,,{ bonus bFlee,getrefine()*2; },{},{}
-27161,Mavka_Card,Mavka Card,6,20,,10,,,,,,,,136,,,,,{ bonus2 bMagicAddEle,Ele_Fire,20; bonus2 bMagicAddEle,Ele_Earth,20; },{},{}
+27161,Mavka_Card,Mavka Card,6,20,,10,,,,,,,,136,,,,,{ bonus2 bMagicAtkEle,Ele_Fire,20; bonus2 bMagicAtkEle,Ele_Earth,20; },{},{}
 27162,Gopinich_Card,Gopinich Card,6,20,,10,,,,,,,,769,,,,,{ bonus bSPDrainValue,5; bonus bUseSPrate,50; },{},{}
 //===================================================================
 // New Katars