[DOC release] Update attr.js
[DOC release] Update attr.js

Due to the indentation in the description of the defaultValue
bullet point, our markdown renderer is considering it to be a
code block.

arenoir/data,arenoir/data,HeroicEric/data,arenoir/data,HeroicEric/data,HeroicEric/data,HeroicEric/data,arenoir/data