Changing Embedded File URLs

Site URL: https://static1.squarespace.com/static/5469a24fe4b03457338df4bc/t/5f6928be138ba951e1f02c55/1600727286430/Hindi+Farm+Animal+Flaschards.pdf

When uploading and linking to a pdf from a button on one of our pages, the link generated automatically includes "static1.squarespace....." with a long iteration of letters and numbers. Is there another way to change this first part of the link so that we can streamline it with the rest of our site and make the link something easy to remember?

Use this guide. https://support.squarespace.com/hc/en-us/articles/205813928-Uploading-and-managing-files

The url will be: example.com/s/file-name.pdf