Update setAboutPanelOptions iconPath description

Editor assessment

The subject states the target: the iconPath description in setAboutPanelOptions updated. The docs type is accurate and the absent scope tolerable. The body is squashed fragments — a restatement with an issue number and a simplify-docs note — that never say what the old description got wrong or how the new wording improves it. The PR reference is well-formed. Hygiene is clean. Understandable at the headline level, but a documentation fix without the corrected content in the body leaves the improvement invisible.