update comments~

contracts/public_data_storage.sol

@@ -256,7 +256,7 @@ contract PublicDataStorage is
  // Start a cycle: 20% from the reward of the previous cycle
  if (block.timestamp - curCycleInfo.cycleStartTime > sysConfig.cycleMinTime) {
  uint256 lastCycleReward = curCycleInfo.totalAward;
- // 5%as a foundation income
+ // 5% as a foundation income
  uint256 fundationIncome = (lastCycleReward * 5) / 100;
  gwtToken.transfer(foundationAddress, fundationIncome);
  // If the last round of the award -winning data is less than 32, the remaining bonuses are also rolled into this round prize pool
@@ -791,6 +791,7 @@ contract PublicDataStorage is
 
  if (proof.prover != address(0)) {
  if (root_hash < proof.proofResult) {
+ // challenge success!
  _supplierInfos[proof.prover].lockedBalance -= proof.lockedAmount;
 
  uint256 rewardFromPunish = (proof.lockedAmount * 8) / 10;
@@ -803,6 +804,8 @@ contract PublicDataStorage is
  _supplierInfos[proof.prover].lockedBalance
  );
  } else {
+ // challenge failed!
+ // TODO: emit event?
  return;
  }
  }