Updates docs.

Author: steven2308

README.md

@@ -33,5 +33,6 @@ So far we have created 6 modules as ERC proposals, all of which are ERC721 compa
 - Soulbound: [ERC-6454: Minimal Transferable NFT detection interface](https://eips.ethereum.org/EIPS/eip-6454)
 - Emotable: [ERC-7409: Public Non-Fungible Tokens Emote Repository](https://eips.ethereum.org/EIPS/eip-7409)
 - Dynamic Attributes: [ERC-7508: Dynamic On-Chain Token Attributes Repository ](https://eips.ethereum.org/EIPS/eip-7508)
+- ERC20-Holder: [ERC-7590: ERC-20 Holder Extension for NFTs ](https://eips.ethereum.org/EIPS/eip-7590)
 
 ![RMRK Modules](/img/General_Overview_Modules.png)

contracts/RMRK/extension/tokenHolder/IERC7590.sol

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: CC0-1.0
 
 pragma solidity ^0.8.21;
 
@@ -47,8 +47,8 @@ interface IERC7590 is IERC165 {
     /**
      * @notice Transfer ERC-20 tokens from a specific token.
      * @dev The balance MUST be transferred from this smart contract.
-     * @dev Implementers should validate that the `msg.sender` is either the token owner or approved to manage it before calling this.
-     * @dev Must increase the transfer-out-nonce for the tokenId
+     * @dev MUST increase the transfer-out-nonce for the tokenId
+     * @dev MUST revert if the `msg.sender` is not the owner of the NFT or approved to manage it.
      * @param erc20Contract The address of the ERC-20 smart contract
      * @param tokenId The ID of the token to transfer the ERC-20 tokens from
      * @param amount The number of ERC-20 tokens to transfer

docs/RMRK/extension/tokenHolder/IERC7590.md

@@ -104,7 +104,7 @@ function transferHeldERC20FromToken(address erc20Contract, uint256 tokenId, addr
 
 Transfer ERC-20 tokens from a specific token.
 
-*The balance MUST be transferred from this smart contract.Implementers should validate that the `msg.sender` is either the token owner or approved to manage it before calling this.Must increase the transfer-out-nonce for the tokenId*
+*The balance MUST be transferred from this smart contract.MUST increase the transfer-out-nonce for the tokenIdMUST revert if the `msg.sender` is not the owner of the NFT or approved to manage it.*
 
 #### Parameters
 

docs/RMRK/extension/tokenHolder/RMRKTokenHolder.md

@@ -104,7 +104,7 @@ function transferHeldERC20FromToken(address erc20Contract, uint256 tokenId, addr
 
 Transfer ERC-20 tokens from a specific token.
 
-*The balance MUST be transferred from this smart contract.Implementers should validate that the `msg.sender` is either the token owner or approved to manage it before calling this.Must increase the transfer-out-nonce for the tokenId*
+*The balance MUST be transferred from this smart contract.MUST increase the transfer-out-nonce for the tokenIdMUST revert if the `msg.sender` is not the owner of the NFT or approved to manage it.*
 
 #### Parameters