Fix docs indentation and one example.

Fix docs indentation and one example.

@vincent: This is an ongoing effort, after we're all done we'll update
the damn ChangeLog :-)

@cedric: There are couple of @since 2.0.0, but we're at 1.2.3, could
you review in which version you introduced those changes? :-)

git-svn-id: http://svn.enlightenment.org/svn/e/trunk/eet@47300 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33