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Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

contracts/utils/cryptography/MerkleProof.sol

@@ -30,12 +30,12 @@ library MerkleProof {
 
     /**
      * @dev Returns the rebuilt hash obtained by traversing a Merklee tree up
-     * from `leaf` using `proof`, and an index uniquelly identifying the leaf
+     * from `leaf` using `proof`, and an index uniquely identifying the leaf
      * location in the tree. A `proof` is valid if and only if the rebuilt hash
      * matches the root of the tree. When processing the proof, the pairs of
      * leafs & pre-images are assumed to be sorted.
-     * The produced index is unique in the sens that processing two valid proofs
-     * will return the same indices if and only if the leaf at the same location
+     * The produced index is unique in the sense that processing two valid proofs
+     * will return the same indices if and only if the leaf is at the same location
      * in the tree. This helps distinguishing two leaves that have the same
      * bytes32 identifier but are present in different locations in the merkle
      * tree.