Update ZooKeeper minimum version requirements (#12284) (#12288)

docs/docs/en/guide/installation/pseudo-cluster.md

@@ -11,7 +11,7 @@ Pseudo-cluster deployment of DolphinScheduler requires external software support
 * JDK：download [JDK][jdk] (1.8+), install and configure environment variable `JAVA_HOME` and append `bin` dir (included in `JAVA_HOME`) to `PATH` variable. You can skip this step if it already exists in your environment.
 * Binary package: Download the DolphinScheduler binary package at [download page](https://dolphinscheduler.apache.org/en-us/download/download.html)
 * Database: [PostgreSQL](https://www.postgresql.org/download/) (8.2.15+) or [MySQL](https://dev.mysql.com/downloads/mysql/) (5.7+), you can choose one of the two, such as MySQL requires JDBC Driver 8.0.16
-* Registry Center: [ZooKeeper](https://zookeeper.apache.org/releases.html) (3.4.6+)，[download link][zookeeper]
+* Registry Center: [ZooKeeper](https://zookeeper.apache.org/releases.html) (3.8.0+)，[download link][zookeeper]
 * Process tree analysis
   * `pstree` for macOS
   * `psmisc` for Fedora/Red/Hat/CentOS/Ubuntu/Debian

docs/docs/zh/guide/installation/pseudo-cluster.md

@@ -11,7 +11,7 @@
 * JDK：下载[JDK][jdk] (1.8+)，安装并配置 `JAVA_HOME` 环境变量，并将其下的 `bin` 目录追加到 `PATH` 环境变量中。如果你的环境中已存在，可以跳过这步。
 * 二进制包：在[下载页面](https://dolphinscheduler.apache.org/zh-cn/download/download.html)下载 DolphinScheduler 二进制包
 * 数据库：[PostgreSQL](https://www.postgresql.org/download/) (8.2.15+) 或者 [MySQL](https://dev.mysql.com/downloads/mysql/) (5.7+)，两者任选其一即可，如 MySQL 则需要 JDBC Driver 8.0.16
-* 注册中心：[ZooKeeper](https://zookeeper.apache.org/releases.html) (3.4.6+)，[下载地址][zookeeper]
+* 注册中心：[ZooKeeper](https://zookeeper.apache.org/releases.html) (3.8.0+)，[下载地址][zookeeper]
 * 进程树分析
   * macOS安装`pstree`
   * Fedora/Red/Hat/CentOS/Ubuntu/Debian安装`psmisc`