Corrected MSI_IMPOSSIBLE_SKILL_AREA color (#8681)

* MSI_IMPOSSIBLE_SKILL_AREA Should appears in Cyan color instead of White

src/map/skill.cpp

@@ -872,7 +872,7 @@ bool skill_isNotOk( uint16 skill_id, map_session_data& sd ){
 		(skill_nocast&8 && mapdata->getMapFlag(MF_BATTLEGROUND)) ||
 		(skill_nocast&16 && mapdata_flag_gvg2_te(mapdata)) || // WOE:TE
 		(mapdata->zone && skill_nocast&(mapdata->zone) && mapdata->getMapFlag(MF_RESTRICTED)) ){
-			clif_msg(&sd, MSI_IMPOSSIBLE_SKILL_AREA); // This skill cannot be used within this area
+			clif_msg_color(&sd, MSI_IMPOSSIBLE_SKILL_AREA, color_table[COLOR_CYAN]); // This skill cannot be used within this area.
 			return true;
 	}