quick clarification

ERCS/erc-7812.md

@@ -205,6 +205,8 @@ The reference implementation of `EvidenceRegistry` and `EvidenceDB` Solidity sma
 
 The low-level Solidity and Circom implementations of SMT can be found [here](../assets/eip-7812/contracts/SparseMerkleTree.sol) and [here](../assets/eip-7812/circuits/SparseMerkleTree.circom).
 
+The height of the SMT is set to `80`.
+
 > Please note that the reference implementation depends on the `@openzeppelin/contracts v5.1.0` and `circomlib v2.0.5`.
 
 ### EvidenceDB Implementation
@@ -318,7 +320,7 @@ contract EvidenceDB is IEvidenceDB, Initializable {
         bytes32 element2_,
         bytes32 element3_
     ) private pure returns (bytes32) {
-        return bytes32(PoseidonUnit3L.poseidon([element1_, element2_, element3_]));
+        return PoseidonUnit3L.poseidon([element1_, element2_, element3_]);
     }
 }
 ```
@@ -350,7 +352,7 @@ contract EvidenceRegistry is IEvidenceRegistry, Initializable {
     }
 
     modifier onRootUpdate() {
-                bytes32 prevRoot_ = _evidenceDB.getRoot();
+        bytes32 prevRoot_ = _evidenceDB.getRoot();
         _rootTimestamps[prevRoot_] = block.timestamp;
         _;
         emit RootUpdated(prevRoot_, _evidenceDB.getRoot());