RFC: Update test documentation by deleting "cd test && make"

[Leslie Zhai]

Hi David,

Thanks for your kind response!

 > Webrev: http://cr.openjdk.java.net/~lzhai/8221357/webrev.00/

A patch by Jing Tian <jingtian at loongson.cn>
I just help him to host his patch on my cr.openjdk.java.net.

 > That seems fine to me. Could I ask you to also fix two existing 
grammar issues...

Thanks for your review!  @Jing Tian  please fix the issue.

Thanks,
Leslie Zhai