eth/downloader, eth/tracer: fix typos in comments (#29707)

eth/downloader/api.go

@@ -129,7 +129,7 @@ func (api *DownloaderAPI) eventLoop() {
 	}
 }
 
-// Syncing provides information when this nodes starts synchronising with the Ethereum network and when it's finished.
+// Syncing provides information when this node starts synchronising with the Ethereum network and when it's finished.
 func (api *DownloaderAPI) Syncing(ctx context.Context) (*rpc.Subscription, error) {
 	notifier, supported := rpc.NotifierFromContext(ctx)
 	if !supported {

eth/tracers/api_test.go

@@ -312,7 +312,7 @@ func TestTraceCall(t *testing.T) {
 			config:    &TraceCallConfig{TxIndex: uintPtr(1)},
 			expectErr: fmt.Errorf("tracing failed: insufficient funds for gas * price + value: address %s have 1000000000000000000 want 1000000000000000100", accounts[2].addr),
 		},
-		// After the target transaction, should be succeed
+		// After the target transaction, should be succeeded
 		{
 			blockNumber: rpc.BlockNumber(genBlocks - 1),
 			call: ethapi.TransactionArgs{