/eth/v1/beacon/rewards/block/{block_id} provides incorrect information
**Describe the bug**

The `/eth/v1/beacon/rewards/block/{block_id}` call returns incorrect information for the `sync_aggregate` value, and hence also `total`.  The value in `sync_aggregate` is the value for a single vote, and is not multiplied by the number of votes.

**To Reproduce**

- pull down the results for `/eth/v1/beacon/rewards/block/{block_id}` for a given block ID
- check the `sync_aggregate` value
- check the number of votes in the sync aggregate
- confirm that the `sync_aggregate` value is for a single vote, not all votes
