修复吨水药成本字段错误

src/pages/Home/ChemCostComparison.js

@@ -329,7 +329,7 @@ export const ChemCost = ({ open, showTip = false }) => {
           <div className={styles.curEnergyCost}>
             <div className={styles.item}>
               <div className={styles.value}>
-                {open ? getValue(snapshot?.otc_day_unit || '') : '***'}
+                {open ? getValue(snapshot?.otc_day_cost_unit || '') : '***'}
                 <span className={styles.unit}>元/m³</span>
               </div>
               <div className={styles.name}>近一天吨水药成本</div>