#98 Patch M25-4 (v28.4) documentation

Repairs graphviz SampleImage.1.1.0. .png files

Closes #98 (closed)

requested review from @chris.hough

assigned to @chris.hough

requested review from @chad and removed review request for @chris.hough

FYI @pierrick.gaudin

approved this merge request

merged

mentioned in commit 73126fbc