Updated Rally doc reference
Updated Rally doc reference

Updated the link in terminology/rally.rst to point to the new
Rally docs

Change-Id: Ibe075c20481e01a3e371b72bea7201c8399e6c22

stackforge/fuel-docs,ogelbukh/fuel-docs,ogelbukh/fuel-docs,phillipsio/fuel-docs,phillipsio/fuel-docs,ogelbukh/fuel-docs,phillipsio/fuel-docs,stackforge/fuel-docs,phillipsio/fuel-docs,ogelbukh/fuel-docs