The full path is missing into the "name" attribute of each tag.
The fix can be :
sed -E 's?<file name="(.*)\?">?<file name="'`pwd`'/\1">?' jshint.xml > jshint-proper.xml
Use/adapt the enclosed Makefile, and in your Jenkins jobs configuration, make the builder to call the "jslint" task.
make jslint
In the violation plugin configuration, set the JSLINT parameter to point to the new generated file (in my example, it is jshint-proper.xml).