chore: grammar adjustment

Author: wackerow

public/content/roadmap/verkle-trees/index.md

@@ -60,7 +60,7 @@ Verkle tree testnets are already up and running, but there are still substantial
 - [Guillaume Ballet explain verkle trees at ETHGlobal](https://www.youtube.com/watch?v=f7bEtX3Z57o)
 - ["How Verkle trees make Ethereum lean and mean" by Guillaume Ballet at Devcon 6](https://www.youtube.com/watch?v=Q7rStTKwuYs)
 - [Piper Merriam on stateless clients from ETHDenver 2020](https://www.youtube.com/watch?v=0yiZJNciIJ4)
-- [Dankrad Fiest explain Verkle trees and statelessness on Zero Knowledge podcast](https://zeroknowledge.fm/episode-202-stateless-ethereum-verkle-tries-with-dankrad-feist/)
+- [Dankrad Fiest explains Verkle trees and statelessness on Zero Knowledge podcast](https://zeroknowledge.fm/episode-202-stateless-ethereum-verkle-tries-with-dankrad-feist/)
 - [Vitalik Buterin on Verkle trees](https://vitalik.eth.limo/general/2021/06/18/verkle.html)
 - [Dankrad Feist on Verkle trees](https://dankradfeist.de/ethereum/2021/06/18/verkle-trie-for-eth1.html)
 - [Verkle tree EIP documentation](https://notes.ethereum.org/@vbuterin/verkle_tree_eip#Illustration)