Fix handling of `nonce too low` error (#643)

* fix: nonce too low from error as debug

* chore: cargo fmt

Co-authored-by: Georgios Konstantopoulos <me@gakonst.com>

ethers-providers/src/pending_escalator.rs

@@ -142,7 +142,7 @@ macro_rules! poll_broadcast_fut {
             Poll::Ready(Err(e)) => {
                 // kludge. Prevents erroring on "nonce too low" which indicates
                 // a previous escalation confirmed during this broadcast attempt
-                if format!("{}", e).contains("nonce too low") {
+                if format!("{:?}", e).contains("nonce too low") {
                     check_all_receipts!($cx, $this);
                 } else {
                     tracing::error!(