Fix lint

Author: mkalinin

specs/electra/beacon-chain.md

@@ -447,7 +447,7 @@ def compute_proposer_index(state: BeaconState, indices: Sequence[ValidatorIndex]
         candidate_index = indices[compute_shuffled_index(i % total, total, seed)]
         random_byte = hash(seed + uint_to_bytes(uint64(i // 32)))[i % 32]
         effective_balance = state.validators[candidate_index].effective_balance
-        if effective_balance * MAX_RANDOM_BYTE >= MAX_EFFECTIVE_BALANCE_ELECTRA * random_byte: #[Modified in Electra:EIP7251]
+        if effective_balance * MAX_RANDOM_BYTE >= MAX_EFFECTIVE_BALANCE_ELECTRA * random_byte:  # [Modified in Electra:EIP7251]
             return candidate_index
         i += 1
 ```