HPCC-11297 Improved "bulls-eye" icon

Fixes HPCC-11297

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #5762 from GordonSmith/HPCC-11297

HPCC-11297 Improved "bulls-eye" icon

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>