“Copy” the entire URL (web address) for each website your teacher provides. For example, open the syllabus, select the URL at the top of the browser page, and copy it. (“Ctrl” + “C”)
Now, go to your hub and select (highlight with your cursor) the word “syllabus”.
Next, click the link icon in the toolbar
Finally, paste the URL you copied (“Ctrl” + “V”) in the bar that pops up and click “Apply”