update README

RuoYi

2023-12-13 779a2e816c9fa2b37d9e6a313256c9ba54649da2

 src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java

@@ -464,7 +464,7 @@
                        {

                            propertyName = field.getName() + "." + attr.targetAttr();

                        }

                        else if (StringUtils.isNotEmpty(attr.readConverterExp()))

                        if (StringUtils.isNotEmpty(attr.readConverterExp()))

                        {

                            val = reverseByExp(Convert.toStr(val), attr.readConverterExp(), attr.separator());

                        }