Change Perk website URL (#145)

Updated the website URL for Perk. It is perk.com, not travelperk.com

Author: dukebody

src/data/sponsors/perk.md

@@ -1,6 +1,6 @@
 ---
 name: 'Perk'
-website: 'https://www.travelperk.com/'
+website: 'https://www.perk.com/'
 tier: 'main'
 logobg: '#ffffff'
 logo: '/sponsors/perk.svg'