Fix example for `START` event in the streams documentation to explicitly wrap attribute name in a `QName` object.
Fix example for `START` event in the streams documentation to explicitly wrap attribute name in a `QName` object.

git-svn-id: 35afe1d183cbd4849519a30d21151995795e8f1d@900 de761a21-4c15-0410-92fa-db90950b6ec0

davidfraser/genshi,dag/genshi,dag/genshi,dag/genshi,davidfraser/genshi,davidfraser/genshi,davidfraser/genshi,dag/genshi