Update src/seth/README.md

Co-authored-by: David Terry <[email protected]>

src/seth/README.md

@@ -189,10 +189,9 @@ the `ETH_RPC_ACCOUNTS` variable or use the `--rpc-accounts` flag.
 This probably means you need to use Geth's or Parity's account
 management tools to "unlock" your account.
 
-If both `ETH_RPC_ACCOUNTS` and `ETH_FROM` are set, Seth will first check if the
-provided account is in the keystore and only use the RPC node's signer if the
-account does not exist.
-
+If both `ETH_RPC_ACCOUNTS` and `ETH_FROM` are set, `seth` will first check if the
+provided account can be found in the keystore, or in any connected hardware
+wallet, and only use the RPC node's signer if the account does not exist.
 Note: Seth uses the [`ethsign`] tool for signing transactions.
 This tool uses Geth as a library.