style: format code with gofmt

pkg/arbitrum/rpc_client_helper.go

@@ -12,11 +12,11 @@ import (
 
 // RoundRobinClient wraps a client and tracks round-robin usage
 type RoundRobinClient struct {
-	manager  *RPCManager
-	ctx      context.Context
-	logger   *logger.Logger
-	lastIdx  int
-	readCalls int64
+	manager    *RPCManager
+	ctx        context.Context
+	logger     *logger.Logger
+	lastIdx    int
+	readCalls  int64
 	writeCalls int64
 }