Add Chainlist mention (#1263)

Author: Gwen-M

docs/get-started/connect.mdx

@@ -119,7 +119,7 @@ for further information.
 You can configure MetaMask to connect to Linea Mainnet or Linea Sepolia with any RPC endpoint. 
 
 Refer to the [MetaMask Support site](https://support.metamask.io/networks-and-sidechains/managing-networks/how-to-add-a-custom-network-rpc/#adding-or-editing-rpc-urls) 
-for instructions on how to add RPC endpoints.
+for instructions on how to add RPC endpoints. You can find most networks and add them easily on [Chainlist](https://chainlist.org/).
 
 ## Other wallets