doc(rust): fix README.md of java sdk (#480)
diff --git a/java/README.md b/java/README.md
index b97014b..b376136 100644
--- a/java/README.md
+++ b/java/README.md
@@ -6,7 +6,7 @@
Here is the java implementation of the client for [Apache RocketMQ](https://rocketmq.apache.org/). Different from the [remoting-based client](https://github.com/apache/rocketmq/tree/develop/client), the current implementation is based on separating architecture for computing and storage, which is the more recommended way to access the RocketMQ service.
-Here are some preparations you may need to know (or refer to [here](https://rocketmq.apache.org/docs/quickStart/02quickstart/https://rocketmq.apache.org/docs/quickStart/02quickstart/)).
+Here are some preparations you may need to know (or refer to [here](https://rocketmq.apache.org/docs/quickStart/02quickstart/)).
1. Java 8+ for runtime, Java 11+ for the build;
2. Setup namesrv, broker, and [proxy](https://github.com/apache/rocketmq/tree/develop/proxy).
