add links to medium (Cross-Contract Reentrancy)

Author: serial-coder

Diff for: 05_cross_contract_reentrancy/Attack.sol

@@ -5,7 +5,7 @@
 //--------------------------------------------------------------------------//
 
 // For more info, please refer to my article:
-//  - On Medium: (coming soon)
+//  - On Medium: https://medium.com/valixconsulting/solidity-smart-contract-security-by-example-05-cross-contract-reentrancy-30f29e2a01b9
 //  - On serial-coder.com: (coming soon)
 
 pragma solidity 0.8.17;

Diff for: 05_cross_contract_reentrancy/Dependencies.sol

@@ -5,7 +5,7 @@
 //--------------------------------------------------------------------------//
 
 // For more info, please refer to my article:
-//  - On Medium: (coming soon)
+//  - On Medium: https://medium.com/valixconsulting/solidity-smart-contract-security-by-example-05-cross-contract-reentrancy-30f29e2a01b9
 //  - On serial-coder.com: (coming soon)
 
 pragma solidity 0.8.17;

Diff for: 05_cross_contract_reentrancy/FixedMoonVault.sol

@@ -5,7 +5,7 @@
 //--------------------------------------------------------------------------//
 
 // For more info, please refer to my article:
-//  - On Medium: (coming soon)
+//  - On Medium: https://medium.com/valixconsulting/solidity-smart-contract-security-by-example-05-cross-contract-reentrancy-30f29e2a01b9
 //  - On serial-coder.com: (coming soon)
 
 pragma solidity 0.8.17;

Diff for: 05_cross_contract_reentrancy/InsecureMoonVault.sol

@@ -5,7 +5,7 @@
 //--------------------------------------------------------------------------//
 
 // For more info, please refer to my article:
-//  - On Medium: (coming soon)
+//  - On Medium: https://medium.com/valixconsulting/solidity-smart-contract-security-by-example-05-cross-contract-reentrancy-30f29e2a01b9
 //  - On serial-coder.com: (coming soon)
 
 pragma solidity 0.8.17;

Diff for: 05_cross_contract_reentrancy/README.md

@@ -4,4 +4,4 @@ For more info, please refer to my article:
 
 | Vulnerability Issue | Article Links |
 | --- | --- |
-| [Cross-Contract Reentrancy]() | - On Medium (coming soon)<br />- On serial-coder[.]com (coming soon) |
+| [Cross-Contract Reentrancy]() | - [On Medium](https://medium.com/valixconsulting/solidity-smart-contract-security-by-example-05-cross-contract-reentrancy-30f29e2a01b9)<br />- On serial-coder[.]com (coming soon) |

Diff for: README.md

@@ -16,7 +16,7 @@ Nonetheless, feel free to contact **[Valix Consulting](https://valix.io)** for y
 | 02 | [Reentrancy](02_reentrancy) | - [On Medium](https://medium.com/valixconsulting/solidity-smart-contract-security-by-example-02-reentrancy-b0c08cfcd555)<br /> - [On serial-coder.com](https://www.serial-coder.com/post/solidity-smart-contract-security-by-example-02-reentrancy/) |
 | 03 | [Reentrancy via Modifier](03_reentrancy_via_modifier) | - [On Medium](https://medium.com/valixconsulting/solidity-smart-contract-security-by-example-03-reentrancy-via-modifier-fba6b1d8ff81)<br /> - [On serial-coder.com](https://www.serial-coder.com/post/solidity-smart-contract-security-by-example-03-reentrancy-via-modifier/) |
 | 04 | [Cross-Function Reentrancy](04_cross_function_reentrancy) | - [On Medium](https://medium.com/valixconsulting/solidity-smart-contract-security-by-example-04-cross-function-reentrancy-de9cbce0558e)<br /> - On serial-coder[.]com (coming soon) |
-| 05 | [Cross-Contract Reentrancy](04_cross_contract_reentrancy) | - On Medium (coming soon)<br /> - On serial-coder[.]com (coming soon) |
+| 05 | [Cross-Contract Reentrancy](05_cross_contract_reentrancy) | - [On Medium](https://medium.com/valixconsulting/solidity-smart-contract-security-by-example-05-cross-contract-reentrancy-30f29e2a01b9)<br /> - On serial-coder[.]com (coming soon) |
 
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