Update IERC777.sol (#2184)

contracts/token/ERC777/IERC777.sol

@@ -96,7 +96,7 @@ interface IERC777 {
     function authorizeOperator(address operator) external;
 
     /**
-     * @dev Make an account an operator of the caller.
+     * @dev Revoke an account's operator status for the caller.
      *
      * See {isOperatorFor} and {defaultOperators}.
      *