🥢 ERC721 natspec nit (#1255)

src/tokens/ERC721.sol

@@ -19,7 +19,7 @@ pragma solidity ^0.8.4;
 ///   the balance of an owner MUST always be equal to their number of ownership slots.
 ///   The transfer functions do not have an underflow guard for user token balances.
 /// - Make sure all variables written to storage are properly cleaned
-//    (e.g. the bool value for `isApprovedForAll` MUST be either 1 or 0 under the hood).
+///   (e.g. the bool value for `isApprovedForAll` MUST be either 1 or 0 under the hood).
 /// - Check that the overridden function is actually used in the function you want to
 ///   change the behavior of. Much of the code has been manually inlined for performance.
 abstract contract ERC721 {