Merge pull request #3629 from StefanBratanov/eip_6110_rename_function

EIP-6110 rename `get_eth1_deposit_count` function

specs/_features/eip6110/validator.md

@@ -33,7 +33,7 @@ Please see related Beacon Chain doc before continuing and use them as a referenc
 The expected number of deposits MUST be changed from `min(MAX_DEPOSITS, eth1_data.deposit_count - state.eth1_deposit_index)` to the result of the following function:
 
 ```python
-def get_eth1_deposit_count(state: BeaconState) -> uint64:
+def get_eth1_pending_deposit_count(state: BeaconState) -> uint64:
     eth1_deposit_index_limit = min(state.eth1_data.deposit_count, state.deposit_receipts_start_index)
     if state.eth1_deposit_index < eth1_deposit_index_limit:
         return min(MAX_DEPOSITS, eth1_deposit_index_limit - state.eth1_deposit_index)