Adding Reference Module to Readme.md

Author: SohamMajumder

data-collection/README.md

@@ -42,7 +42,7 @@ List of modules and objects collected:
 | `licence-manager`            |  [AWS License Manager](https://aws.amazon.com/license-manager/)  | Management Accounts  | Collect Licenses and Grants |
 | `aws-feeds`                  |  N/A                  | Data Collection Account | Collects Blog posts and News Feeds |
 | `quicksight`                 |  [Amazon QuickSight](https://aws.amazon.com/quicksight/)    | Data Collection Account | Collects QuickSight User and Group information in the Data Collection Account only |
-
+| `reference`                 |   Various services      | Data Collection Account | Collects reference data for other modules and dashboard to function |
 
 ### Deployment Overview