Reword

GUIDELINES.md

@@ -131,14 +131,11 @@ In addition to the official Solidity Style Guide we have a number of other conve
   abstract contract AccessControl is ..., {
   ```
 
-* Return values should be explicitly named if there are more than one.
+* Return values are generally not named, unless they are not immediately clear or there are multiple return values.
 
   ```solidity
   function expiration() public view returns (uint256) { // Good
   function hasRole() public view returns (bool isMember, uint32 currentDelay) { // Good
-
-  function expiration() public view returns (uint256 expiration) { // Bad
-  function hasRole() public view returns (bool, uint32) { // Bad
   ```
 
 * Unchecked arithmetic blocks should contain comments explaining why overflow is guaranteed not to happen. If the reason is immediately apparent from the line above the unchecked block, the comment may be omitted.