Update release notes for 0.3.2
Update release notes for 0.3.2

This patch fixes several symantic errors.

Change-Id: Ie03bbe9a0ba1ce100703dbbac6461a48e1c94367

yeming233/rally,vganapath/rally,vganapath/rally,gluke77/rally,gluke77/rally,yeming233/rally,eayunstack/rally,vganapath/rally,openstack/rally,eayunstack/rally,gluke77/rally,openstack/rally,openstack/rally,eayunstack/rally,vganapath/rally,eonpatapon/rally,eonpatapon/rally,openstack/rally,gluke77/rally