[Bug report]: NDataTable pagination prefix endIndex incorrect

[cnguu]

TuSimple/naive-ui version (版本)

2.15.5

Vue version (Vue 版本)

3.1.4

Browser and its version (浏览器及其版本)

Chrome(91.0.4472.164)

System and its version (系统及其版本)

Win10 20H2 19042.1110

Node version (Node 版本)

Reappearance link (重现链接)

https://codesandbox.io/s/intelligent-ellis-k3oew?file=/src/SDataTable.vue

Reappearance steps (重现步骤)

1. Look the pagination.prefix

Expected results (期望的结果)

pagination: {
        page: 1,
        pageSize: 15,
        pageSizes: [15, 25, 50, 100],
        pageCount: 101,
        showQuickJumper: true,
        showSizePicker: true,
            prefix: (info) => {
              // endIndex = 14
              return `${info.startIndex   1}-${
                info.endIndex   1
              } item / total: ${info.total||0}`;
            },
      },

Actual results (实际的结果)

pagination: {
        page: 1,
        pageSize: 15,
        pageSizes: [15, 25, 50, 100],
        pageCount: 101,
        showQuickJumper: true,
        showSizePicker: true,
            prefix: (info) => {
              // endIndex = 15
              return `${info.startIndex   1}-${
                info.endIndex   1
              } item / total: ${info.total||0}`;
            },
      },

Remarks (补充说明)