JDK Requirements should clarify that java 8 requires a jre, not a jdk

https://github.com/redhat-developer/vscode-java/wiki/JDK-Requirements documents how to set the project JDK. The example config contains "path": "/path/to/jdk-8". However, when I followed the instructions and entered a path to a JDK, I got an error that the jdk did not fulfill the requirements of "JavaSE-1.8". When I instead downloaded a jdk8 jre and pointed to it, everything worked. So I think the documentation should more clearly state that you need a JRE, not a JDK, for java 8.

Environment

• Operating System: Ubuntu Linux
• JDK version: 8
• Visual Studio Code version: 1.75.1
• Java extension version: Language Support for Java(TM) by Red Hat v1.15.0
• Java Debugger extension version: Debugger for Java v0.48.0

Steps To Reproduce

1. Follow instructions in https://github.com/redhat-developer/vscode-java/wiki/JDK-Requirements to configure a java 8 jdk as the default
2. Observe error "Runtime at '/path/to/jdk1.8.0_xxx' is not compatible with the 'JavaSE-1.8' environment"

打开链接的 JDK-Requirements wiki 页面，并检查 Java 8 的示例配置。明确所需的运行时类型，使其与 issue 中描述的可正常工作的设置一致，然后验证这些说明不再将用户引向不兼容的路径。