[SPARK-5058] Updated broken links

Updated the broken link pointing to the KafkaWordCount example to the correct one.

Author: sigmoidanalytics <mayur@sigmoidanalytics.com>

Closes #3877 from sigmoidanalytics/patch-1 and squashes the following commits:

3e19b31 [sigmoidanalytics] Updated broken links

docs/streaming-kafka-integration.md

@@ -20,7 +20,7 @@ title: Spark Streaming + Kafka Integration Guide
         	streamingContext, [zookeeperQuorum], [group id of the consumer], [per-topic number of Kafka partitions to consume])
 
 	See the [API docs](api/scala/index.html#org.apache.spark.streaming.kafka.KafkaUtils$)
-	and the [example]({{site.SPARK_GITHUB_URL}}/tree/master/examples/src/main/scala/org/apache/spark/examples/streaming/KafkaWordCount.scala).
+	and the [example]({{site.SPARK_GITHUB_URL}}/blob/master/examples/scala-2.10/src/main/scala/org/apache/spark/examples/streaming/KafkaWordCount.scala).
 	</div>
 	<div data-lang="java" markdown="1">
 		import org.apache.spark.streaming.kafka.*;