Portfolio button on Projects page hero section does not work

[theNatePi]

Bug Description:
The "portfolio" button in the hero section on the Projects page does not navigate anywhere when clicked.

Suspected Cause:
The PDF file the button should link to is missing in the deployed site.

Steps to Reproduce:

1. Go to https://ctc-uci.com/Projects
2. Click the "portfolio" button
3. Directed to 404

Expected Behavior:
Clicking the "portfolio" button should open the portfolio PDF file.