check whether amount is less than 0 for transfer transaction

src/locales/en.json

@@ -1081,6 +1081,7 @@
         "no data to import": "No data to import",
         "cannot add transaction before balance modification transaction": "You cannot add transaction before the balance modification transaction",
         "balance modification transaction cannot modify transaction time": "You cannot modify transaction time for balance modification transaction",
+        "transfer transaction amount cannot be less than zero": "Amount cannot be less than 0 for transfer transaction",
         "transaction category id is invalid": "Transaction category ID is invalid",
         "transaction category not found": "Transaction category is not found",
         "transaction category type is invalid": "Transaction category type is invalid",

src/locales/zh_Hans.json

@@ -1081,6 +1081,7 @@
         "no data to import": "没有可以导入的数据",
         "cannot add transaction before balance modification transaction": "不能添加早于修改余额的交易",
         "balance modification transaction cannot modify transaction time": "您无法对修改余额的交易修改交易时间",
+        "transfer transaction amount cannot be less than zero": "转账交易的金额不能小于0",
         "transaction category id is invalid": "交易分类ID无效",
         "transaction category not found": "交易分类不存在",
         "transaction category type is invalid": "交易分类类型无效",