Change roadmap updated date

Editor assessment

Change roadmap updated date is a tiny, complete statement: the reader knows exactly what was edited and can infer the routine maintenance behind it without opening the diff. The docs type is accurate, the missing scope is harmless for a single-file edit whose subject names the file, and no body is needed for a date correction. No footer beyond the project reference applies. Clean and publishable. The date change is fully described, and for an edit this trivial no reader could ask for more.