Merge pull request #9029 from ammar2050/dev

Update index.md

Author: corwintines

src/content/community/research/index.md

@@ -81,7 +81,7 @@ Ethereum clients are implementations of the Ethereum protocol. Client developmen
 An Ethereum node is required to run two pieces of software:
 
 1. a consensus client to keep track of the head of the blockchain, gossip blocks and handle consensus logic
-2. an execution client to support the Ethereum Virtual Machine and execute transactions.
+2. an execution client to support the Ethereum Virtual Machine and execute transactions and smart contracts
 
 See the [nodes and clients page](/developers/docs/nodes-and-clients/) for more detail on nodes and clients and for a list of all current client implementations. You can also find a history of all Ethereum upgrades on the [history page](/history/).