Update IERC20.cairo

src/starkware/starknet/std_contracts/ERC20/IERC20.cairo

@@ -4,30 +4,39 @@ from starkware.cairo.common.uint256 import Uint256
 
 @contract_interface
 namespace IERC20 {
+    // Returns the name of the token.
     func name() -> (name: felt) {
     }
 
+    // Returns the symbol of the token.
     func symbol() -> (symbol: felt) {
     }
 
+    // Returns the number of decimals the token uses.
     func decimals() -> (decimals: felt) {
     }
 
+    // Returns the total token supply.
     func totalSupply() -> (totalSupply: Uint256) {
     }
 
+    // Returns the balance of the specified account.
     func balanceOf(account: felt) -> (balance: Uint256) {
     }
 
+    // Returns the remaining number of tokens that the spender is allowed to spend on behalf of the owner.
     func allowance(owner: felt, spender: felt) -> (remaining: Uint256) {
     }
 
+    // Transfers a specific amount of tokens to a specified recipient.
     func transfer(recipient: felt, amount: Uint256) -> (success: felt) {
     }
 
+    // Transfers a specific amount of tokens from a sender to a recipient, using the allowance mechanism.
     func transferFrom(sender: felt, recipient: felt, amount: Uint256) -> (success: felt) {
     }
 
+    // Approves a spender to spend a specific amount of tokens on behalf of the message sender.
     func approve(spender: felt, amount: Uint256) -> (success: felt) {
     }
 }