typos (#130)

packages/contracts/contracts/optimistic-ethereum/OVM/execution/OVM_ExecutionManager.sol

@@ -914,7 +914,7 @@ contract OVM_ExecutionManager is iOVM_ExecutionManager, Lib_AddressResolver {
             bytes memory _returndata
         )
     {
-        // EVM precompiles have the same address on L1 and L2 --> no trie lookup neededgit s.
+        // EVM precompiles have the same address on L1 and L2 --> no trie lookup needed.
         address codeContractAddress =
             uint(_contract) < 100
             ? _contract
@@ -1552,7 +1552,7 @@ contract OVM_ExecutionManager is iOVM_ExecutionManager, Lib_AddressResolver {
     /**
      * Validates the gas limit for a given transaction.
      * @param _gasLimit Gas limit provided by the transaction.
-     * @param _queueOrigin Queue from which the transaction orginated.
+     * @param _queueOrigin Queue from which the transaction originated.
      * @return _valid Whether or not the gas limit is valid.
      */
     function _isValidGasLimit(
@@ -1569,7 +1569,7 @@ contract OVM_ExecutionManager is iOVM_ExecutionManager, Lib_AddressResolver {
             return false;
         }
 
-        // Always have to be above the minumum gas limit.
+        // Always have to be above the minimum gas limit.
         if (_gasLimit < gasMeterConfig.minTransactionGasLimit) {
             return false;
         }
@@ -1596,7 +1596,7 @@ contract OVM_ExecutionManager is iOVM_ExecutionManager, Lib_AddressResolver {
     /**
      * Updates the cumulative gas after a transaction.
      * @param _gasUsed Gas used by the transaction.
-     * @param _queueOrigin Queue from which the transaction orginated.
+     * @param _queueOrigin Queue from which the transaction originated.
      */
     function _updateCumulativeGas(
         uint256 _gasUsed,

packages/contracts/contracts/optimistic-ethereum/OVM/execution/OVM_StateManager.sol

@@ -587,7 +587,7 @@ contract OVM_StateManager is iOVM_StateManager {
      * Checks whether an item is in a particular state (ITEM_LOADED or ITEM_CHANGED) and sets the
      * item to the provided state if not.
      * @param _item 32 byte item ID to check.
-     * @param _minItemState Minumum state that must be satisfied by the item.
+     * @param _minItemState Minimum state that must be satisfied by the item.
      * @return _wasItemState Whether or not the item was already in the state.
      */
     function _testAndSetItemState(

packages/contracts/contracts/optimistic-ethereum/libraries/trie/Lib_MerkleTrie.sol

@@ -819,7 +819,7 @@ library Lib_MerkleTrie {
 
     /**
      * @notice Creates an empty branch node.
-     * @return _node Empty branch node as a TrieNode stuct.
+     * @return _node Empty branch node as a TrieNode struct.
      */
     function _makeEmptyBranchNode()
         private