[STREAMING][MINOR] Typo fixes

Author: Jacek Laskowski <jacek@japila.pl>

Closes #10698 from jaceklaskowski/streaming-kafka-typo-fixes.

external/kafka/src/main/scala/org/apache/spark/streaming/kafka/KafkaCluster.scala

@@ -385,7 +385,7 @@ object KafkaCluster {
     val seedBrokers: Array[(String, Int)] = brokers.split(",").map { hp =>
       val hpa = hp.split(":")
       if (hpa.size == 1) {
-        throw new SparkException(s"Broker not the in correct format of <host>:<port> [$brokers]")
+        throw new SparkException(s"Broker not in the correct format of <host>:<port> [$brokers]")
       }
       (hpa(0), hpa(1).toInt)
     }

external/kafka/src/main/scala/org/apache/spark/streaming/kafka/KafkaRDD.scala

@@ -156,7 +156,7 @@ class KafkaRDD[
     var requestOffset = part.fromOffset
     var iter: Iterator[MessageAndOffset] = null
 
-    // The idea is to use the provided preferred host, except on task retry atttempts,
+    // The idea is to use the provided preferred host, except on task retry attempts,
     // to minimize number of kafka metadata requests
     private def connectLeader: SimpleConsumer = {
       if (context.attemptNumber > 0) {