Typo error in KafkaWordCount example

topicpMap to topicMap

Author: Gaspar Munoz <munozs.88@gmail.com>

Closes #2614 from gasparms/patch-1 and squashes the following commits:

00aab2c [Gaspar Munoz] Typo error in KafkaWordCount example

(cherry picked from commit b81ee0b4)
Signed-off-by: Tathagata Das <tathagata.das1565@gmail.com>

examples/src/main/scala/org/apache/spark/examples/streaming/KafkaWordCount.scala

@@ -53,8 +53,8 @@ object KafkaWordCount {
     val ssc =  new StreamingContext(sparkConf, Seconds(2))
     ssc.checkpoint("checkpoint")
 
-    val topicpMap = topics.split(",").map((_,numThreads.toInt)).toMap
-    val lines = KafkaUtils.createStream(ssc, zkQuorum, group, topicpMap).map(_._2)
+    val topicMap = topics.split(",").map((_,numThreads.toInt)).toMap
+    val lines = KafkaUtils.createStream(ssc, zkQuorum, group, topicMap).map(_._2)
     val words = lines.flatMap(_.split(" "))
     val wordCounts = words.map(x => (x, 1L))
       .reduceByKeyAndWindow(_ + _, _ - _, Minutes(10), Seconds(2), 2)