Update links to PUL exhibitions

[escowles]

We now have pages up for all of the PUL exhibitions that will be open during C4L:

• The Most Formidable Weapon Against Errors: The Sid Lapidus ’59 Collection & the Age of Reason (Firestone/Milberg Gallery)
• Be Happy: The work of Barbara Valenza (Firestone/Cotsen)
• Credit Line, Please: Photographs by Elizabeth Menzies (Mudd)
• • Powering Up the U.S. Labor Force: Women in Industry During World War II (1940-1945) (Simpson/IR section)

[escowles]

Also, Museum exhibitions will be listed at https://artmuseum.princeton.edu/exhibitions (currently only 1 will run through C4L dates, so probably check back in a few months).

[escowles]

Fixed in ff6fdaa