Fix hotel contact info

Author: escowles

_data/conf.yml

@@ -105,8 +105,8 @@ venue:
         street: One Dock Street
         city-state: Philadelphia, PA
         postal-code: 19106
-        phone: 609-380-1457
-        website: https://www.hilton.com/en/hotels/pctgpgu-graduate-princeton/
+        phone: 215-238-6000
+        website: https://www.marriott.com/en-us/hotels/phlmo-philadelphia-marriott-old-city/overview/
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