commit: composeMsg explanation

Signed-off-by: shankar <shankar@layerzerolabs.org>

Author: shankars99

packages/ovault-evm/contracts/VaultComposerSync.sol

@@ -141,10 +141,11 @@ contract VaultComposerSync is IVaultComposerSync, ReentrancyGuard {
         bytes memory _composeMsg,
         uint256 _amount
     ) external payable {
-        // @dev Can only be called by self
+        /// @dev Can only be called by self
         if (msg.sender != address(this)) revert OnlySelf(msg.sender);
 
-        // TODO comment why we do this
+        /// @dev SendParam defines how the composer will handle the user's funds
+        /// @dev The minMsgValue is the minimum amount of msg.value that must be sent, failing to do so will revert and the transaction will be retained in the endpoint for future retries
         (SendParam memory sendParam, uint256 minMsgValue) = abi.decode(_composeMsg, (SendParam, uint256));
         if (msg.value < minMsgValue) revert InsufficientMsgValue(minMsgValue, msg.value);