HPCC-11484 HPCC Systems link needs an icon

Fixes HPCC-11484

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #5963 from GordonSmith/HPCC-11484

HPCC-11484 HPCC Systems link needs an icon

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>