修复 【兑换码管理】加款对话框中，预估当前剩余余额为小数，加款金额为小数时，预估充值后剩余剩余前端会计算的精度有误

src/components/knockGold/Dialog.jsx

@@ -58,7 +58,9 @@ export default ({ data, onChangeMoney }) => {
           预估当前剩余余额为
           <span className='green'>
             {' '}
-            {stateData?.recharge_amount - stateData?.used_amount}{' '}
+            {(stateData?.recharge_amount - stateData?.used_amount).toFixed(
+              2
+            )}{' '}
           </span>
           元
         </p>
@@ -122,11 +124,11 @@ export default ({ data, onChangeMoney }) => {
           预估充值后剩余余额为
           <span className='blue'>
             {' '}
-            {Math.floor(
-              (stateData?.recharge_amount - stateData?.used_amount) * 100
-            ) /
-              100 +
-              (stateData?.addNew ? stateData.addNew - 0 : 0)}{' '}
+            {(
+              ((stateData?.recharge_amount - stateData?.used_amount) * 100) /
+                100 +
+              (stateData?.addNew ? stateData.addNew - 0 : 0)
+            ).toFixed(2)}{' '}
           </span>
           元
         </p>