Fix readme example code syntax (rsocket#690)

bigspawn · robertroeser · commit 1472c16bdbc2 · 2019-09-02T10:16:15.000-07:00
Signed-off-by: bigspawn &lt;bigspawn@yandex.ru&gt;
diff --git a/README.md b/README.md
@@ -52,7 +52,7 @@ Frames can be printed out to help debugging. Set the logger `io.rsocket.FrameLog
 
 ## Trivial Client
 
-```
+```java
 package io.rsocket.transport.netty;
 
 import io.rsocket.Payload;
