Updated geography_json type

Author: schnuerle

geography/README.md

@@ -101,7 +101,7 @@ Placeholder -- link to schema to be added later.
 | `description`      | String    | Optional   | Detailed description of geography                                                      |
 | `geography_type`   | String     | Optional   | Type of geography, e.g. `municipal_boundary` or `council_district` or custom text.  See [Geography Types](#geography-types). |
 | `geography_id`     | UUID      | Required   | Unique ID of geography                                                                 |
-| `geography_json`   | UUID      | Required   | The GeoJSON that defines the geographical coordinates.                                 |
+| `geography_json`   | JSON      | Required   | The GeoJSON that defines the geographical coordinates.                                 |
 | `effective_date`   | [timestamp][ts] | Optional   | The date at which a Geography is considered "live".  Must be at or after `published_date`. |
 | `published_date`     | [timestamp][ts] | Required   | Time that the geography was published, i.e. made immutable                       |
 | `retire_date`     | [timestamp][ts] | Optional   | Time that the geography is slated to retire. Once the retire date is passed, new policies can no longer reference it and old policies referencing it should be updated. Retired geographies should continue to be returned in the geographies list. Must be after `effective_date`. |