update test format docs

tests/formats/epoch_processing/README.md

@@ -38,7 +38,7 @@ The provided pre-state is already transitioned to just before the specific sub-t
 Sub-transitions:
 
 - `justification_and_finalization`
-- *`rewards_and_penalties` - planned testing extension*
+- `rewards_and_penalties` (limited to `minimal` config)
 - `registry_updates`
 - `slashings`
 - `final_updates`

tests/formats/rewards/README.md

@@ -7,8 +7,8 @@ There is no "change" factor, the rewards/penalties outputs are pure functions wi
 `Deltas` is defined as:
 ```python
 class Deltas(Container):
-    rewards: List[uint64, VALIDATOR_REGISTRY_LIMIT]
-    penalties: List[uint64, VALIDATOR_REGISTRY_LIMIT]
+    rewards: List[Gwei, VALIDATOR_REGISTRY_LIMIT]
+    penalties: List[Gwei, VALIDATOR_REGISTRY_LIMIT]
 ```
 
 ## Test case format