Fixes a misplaced comment.

Fixes a misplaced comment from #785.

@pwendell

Author: Prashant Sharma <prashant.s@imaginea.com>

Closes #788 from ScrapCodes/patch-1 and squashes the following commits:

3ef6a69 [Prashant Sharma] Update package-info.java
67d9461 [Prashant Sharma] Update package-info.java

(cherry picked from commit e1e3416c4e5f6f32983597d74866dbb809cf6a5e)
Signed-off-by: Reynold Xin <rxin@apache.org>