fix(content): Update magic guild shop to stock 1000 of each high level rune (#1749)

fix: update magic guild shop to 1k stock high level runes

Author: Indio3

data/src/scripts/areas/area_yanille/configs/magic_guild/magic_guild.inv

@@ -25,8 +25,8 @@ stock9=staff_of_air,2,1000
 stock10=staff_of_water,2,1000
 stock11=staff_of_earth,2,1000
 stock12=staff_of_fire,2,1000
-stock13=naturerune,500,300
-stock14=chaosrune,500,100
-stock15=bloodrune,500,300
-stock16=lawrune,500,300
-stock17=deathrune,500,150
+stock13=naturerune,1000,300
+stock14=chaosrune,1000,100
+stock15=bloodrune,1000,300
+stock16=lawrune,1000,300
+stock17=deathrune,1000,150