fix(Input): fix api doc (#3650)

Author: anlyyao

src/input/README.en-US.md

@@ -36,7 +36,7 @@ placeholder | String | undefined | \- | N
 placeholder-class | String | input-placeholder | \- | N
 placeholder-style | String | - | required | Y
 prefix-icon | String / Object / Slot | - | [see more ts definition](https://github.com/Tencent/tdesign-miniprogram/blob/develop/src/common/common.ts) | N
-readonly | Boolean | undefined | `1.8.6` | N
+readonly | Boolean | undefined | `1.7.1` | N
 safe-password-cert-path | String | - | \- | N
 safe-password-custom-hash | String | - | \- | N
 safe-password-length | Number | - | \- | N

src/input/README.md

@@ -115,7 +115,7 @@ placeholder | String | undefined | 占位符 | N
 placeholder-class | String | input-placeholder | 指定 placeholder 的样式类 | N
 placeholder-style | String | - | 必需。指定 placeholder 的样式 | Y
 prefix-icon | String / Object / Slot | - | 组件前置图标。值为字符串表示图标名称，值为 `Object` 类型，表示透传至 `icon`。[通用类型定义](https://github.com/Tencent/tdesign-miniprogram/blob/develop/src/common/common.ts) | N
-readonly | Boolean | undefined | `1.8.6`。只读状态 | N
+readonly | Boolean | undefined | `1.7.1`。只读状态 | N
 safe-password-cert-path | String | - | 安全键盘加密公钥的路径，只支持包内路径 | N
 safe-password-custom-hash | String | - | 安全键盘计算 hash 的算法表达式，如 `md5(sha1('foo' + sha256(sm3(password + 'bar'))))` | N
 safe-password-length | Number | - | 安全键盘输入密码长度 | N