Fix JSON

Author: skade

data/supporters.json

@@ -1402,17 +1402,17 @@
       "contacts": [
         {
           "name": "Lucy Patterson",
-          "twitter": "lu_cyP"
+          "twitter": "lu_cyP",
           "email": "[email protected]"
         },
         {
           "name": "Joram Schwartzmann",
-          "twitter": "sciencejoram"
+          "twitter": "sciencejoram",
           "email": "[email protected]"
         },
         {
           "name": "Giulia Paparo",
-          "twitter": "giu_pap"
+          "twitter": "giu_pap",
           "email": "[email protected]"
         }
       ]