[libata] DocBook minor updates, fixes

Update copyright year, fix minor stuff 'make xmldocs' complains about.

Signed-off-by: Jeff Garzik <jeff@garzik.org>

Documentation/DocBook/libata.tmpl

@@ -14,7 +14,7 @@
   </authorgroup>
 
   <copyright>
-   <year>2003-2005</year>
+   <year>2003-2006</year>
    <holder>Jeff Garzik</holder>
   </copyright>