Use correct id attribute. props ocean90. fixes #23937.

git-svn-id: https://core.svn.wordpress.org/trunk@23909 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Compress scripts/styles: 3.6-beta1-23909.

git-svn-id: https://core.svn.wordpress.org/trunk@23910 1a063a9b-81f0-0310-95a4-ce76da25c4cd