maintainer-list.nix: update cafkafk entry

maintainers/maintainer-list.nix

···
     }];
   };
   cafkafk = {
-    email = "[e-mail]";
+    email = "[e-mail]";
     matrix = "@cafkafk:matrix.cafkafk.com";
     name = "Christina Sørensen";
     github = "cafkafk";
     githubId = 89321978;
-    keys = [{
-      fingerprint = "7B9E E848 D074 AE03 7A0C  651A 8ED4 DEF7 375A 30C8";
-    }];
+    keys = [
+      {
+        fingerprint = "7B9E E848 D074 AE03 7A0C  651A 8ED4 DEF7 375A 30C8";
+      }
+      {
+        fingerprint = "208A 2A66 8A2F CDE7 B5D3 8F64 CDDC 792F 6552 51ED";
+      }
+    ];
   };
 }