Provide a hello world on scanning a pdf on a webpage?

Can you give a hello world of using this tool to scan a pdf on a webpage?

I tried here https://github.com/raybellwaves/accessibility-scanner-test but getting a confusing `Invalid 'path' input (empty)`

I just want to scan https://doit.maryland.gov/About-DoIT/Documents/Maryland-Information-Technology-Master-Plan-2025.pdf