[FLINK-11312][docs] Fix broken link to Zookeeper getting started

docs/ops/jobmanager_high_availability.md

@@ -44,7 +44,7 @@ As an example, consider the following setup with three JobManager instances:
 
 To enable JobManager High Availability you have to set the **high-availability mode** to *zookeeper*, configure a **ZooKeeper quorum** and set up a **masters file** with all JobManagers hosts and their web UI ports.
 
-Flink leverages **[ZooKeeper](http:https://zookeeper.apache.org)** for *distributed coordination* between all running JobManager instances. ZooKeeper is a separate service from Flink, which provides highly reliable distributed coordination via leader election and light-weight consistent state storage. Check out [ZooKeeper's Getting Started Guide](http:https://zookeeper.apache.org/doc/trunk/zookeeperStarted.html) for more information about ZooKeeper. Flink includes scripts to [bootstrap a simple ZooKeeper](#bootstrap-zookeeper) installation.
+Flink leverages **[ZooKeeper](http:https://zookeeper.apache.org)** for *distributed coordination* between all running JobManager instances. ZooKeeper is a separate service from Flink, which provides highly reliable distributed coordination via leader election and light-weight consistent state storage. Check out [ZooKeeper's Getting Started Guide](http:https://zookeeper.apache.org/doc/current/zookeeperStarted.html) for more information about ZooKeeper. Flink includes scripts to [bootstrap a simple ZooKeeper](#bootstrap-zookeeper) installation.
 
 #### Masters File (masters)