What we need is JDK not JRE

Signed-off-by: QQ喵 <[email protected]>

Author: gqqnbig

README.md

@@ -70,7 +70,7 @@ Make sure you have the following prereqs installed:
 
 - [Docker](https://www.docker.com/get-docker)
 - [Docker Compose](https://docs.docker.com/compose/install/)
-- [Java 8](https://www.java.com)
+- [JDK 8](https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html)
 
 > **Note:** Java can be installed using [sdkman](https://sdkman.io/).