fix missing comma (#37)

Author: rndmh3ro

smart_ipv6_rotator/ranges.py

@@ -15,7 +15,7 @@
         "2800:3f0::/32",
         "2a00:1450::/32",
         "2c0f:fb50::/32",
-    ]
+    ],
     "reddit": [
         "2a04:4e40::/32",
         "2a04:4e42::/32"