refactor: add underscore prefix to internal function getExpectedVoteHash()

Author: jaybuidl

contracts/src/arbitration/dispute-kits/DisputeKitClassicBase.sol

@@ -332,7 +332,7 @@ abstract contract DisputeKitClassicBase is IDisputeKit, Initializable, UUPSProxi
             //  Save the votes.
             for (uint256 i = 0; i < _voteIDs.length; i++) {
                 if (round.votes[_voteIDs[i]].account != _juror) revert JurorHasToOwnTheVote();
-                if (hiddenVotes && getExpectedVoteHash(localDisputeID, localRoundID, _voteIDs[i]) != actualVoteHash)
+                if (hiddenVotes && _getExpectedVoteHash(localDisputeID, localRoundID, _voteIDs[i]) != actualVoteHash)
                     revert HashDoesNotMatchHiddenVoteCommitment();
                 if (round.votes[_voteIDs[i]].voted) revert VoteAlreadyCast();
                 round.votes[_voteIDs[i]].choice = _choice;
@@ -744,7 +744,7 @@ abstract contract DisputeKitClassicBase is IDisputeKit, Initializable, UUPSProxi
     /// @param _localRoundID The ID of the round in the Dispute Kit.
     /// @param _voteID The ID of the vote.
     /// @return The expected vote hash.
-    function getExpectedVoteHash(
+    function _getExpectedVoteHash(
         uint256 _localDisputeID,
         uint256 _localRoundID,
         uint256 _voteID

contracts/src/arbitration/dispute-kits/DisputeKitShutter.sol

@@ -164,12 +164,16 @@ contract DisputeKitShutter is DisputeKitClassicBase {
         }
     }
 
+    // ************************************* //
+    // *            Internal               * //
+    // ************************************* //
+
     /// @dev Returns the expected vote hash for a given vote.
     /// @param _localDisputeID The ID of the dispute in the Dispute Kit.
     /// @param _localRoundID The ID of the round in the Dispute Kit.
     /// @param _voteID The ID of the vote.
     /// @return The expected vote hash.
-    function getExpectedVoteHash(
+    function _getExpectedVoteHash(
         uint256 _localDisputeID,
         uint256 _localRoundID,
         uint256 _voteID