hg: code-tools/jtreg: fix trailing whitespace

[jonathan.gibbons at oracle.com]

Changeset: eb71c7e0f70a
Author:    jjg
Date:      2014-11-20 15:22 -0800
URL:       http://hg.openjdk.java.net/code-tools/jtreg/rev/eb71c7e0f70a

fix trailing whitespace

! src/share/doc/javatest/regtest/tag-spec.html