Merge pull request #7286 from miohtama/patch-14

Adding VyperExamples.com do docs

Author: minimalsm

src/content/developers/docs/smart-contracts/languages/index.md

@@ -112,6 +112,7 @@ For more information, [read the Vyper rationale](https://vyper.readthedocs.io/en
 - [Cheat Sheet](https://reference.auditless.com/cheatsheet)
 - [Smart contract development frameworks and tools for Vyper](/developers/docs/programming-languages/python/)
 - [VyperPunk - learn to secure and hack Vyper smart contracts](https://github.com/SupremacyTeam/VyperPunk)
+- [VyperExamples - Vyper vulnerability examples](https://www.vyperexamples.com/reentrancy)
 - [Update Jan 8, 2020](https://blog.ethereum.org/2020/01/08/update-on-the-vyper-compiler)