Correct link to SC membership FAQ

Author: heathermiller

_data/scala-supporters.yml

@@ -22,7 +22,7 @@ supporters:
     url: http://www.twitter.com
   - name: Your company
     logo: /resources/img/frontpage/company-logo.png
-    url: https://scala.epfl.ch/individual-membership.html
+    url: https://scala.epfl.ch/corporate-membership.html
 maintainers:
   - name: Scala Center
     logo: /resources/img/frontpage/scalacenter-logo.png