Add a cateogry for Colorado addresses

Signed-off-by: Taylor Smock <taylor.smock@kaart.com>

public/json/sources.json

@@ -44,6 +44,7 @@
     "Statewide Aggregate Addresses in Colorado 2019 (Public)": {
         "id": "colorado_public_aggregate_addresses",
         "type": "thirdParty",
+        "category": "addresses",
         "countries": {
             "US-CO": ["addr:housenumber"]
         },