[DOCS] fix example code issues in documentation

## What changes were proposed in this pull request?

Fixed broken java code examples in streaming documentation

Attn: tdas

Author: Matthew Wise <matthew.rs.wise@gmail.com>

Closes #13388 from mawise/fix_docs_java_streaming_example.

docs/streaming-kafka-integration.md

@@ -111,7 +111,7 @@ Next, we discuss how to use this approach in your streaming application.
 	<div data-lang="java" markdown="1">
 		import org.apache.spark.streaming.kafka.*;
 
-		JavaPairReceiverInputDStream<String, String> directKafkaStream = 
+		JavaPairInputDStream<String, String> directKafkaStream =
 			KafkaUtils.createDirectStream(streamingContext,
 				[key class], [value class], [key decoder class], [value decoder class],
 				[map of Kafka parameters], [set of topics to consume]);

docs/streaming-programming-guide.md

@@ -145,8 +145,8 @@ import org.apache.spark.streaming.api.java.*;
 import scala.Tuple2;
 
 // Create a local StreamingContext with two working thread and batch interval of 1 second
-SparkConf conf = new SparkConf().setMaster("local[2]").setAppName("NetworkWordCount")
-JavaStreamingContext jssc = new JavaStreamingContext(conf, Durations.seconds(1))
+SparkConf conf = new SparkConf().setMaster("local[2]").setAppName("NetworkWordCount");
+JavaStreamingContext jssc = new JavaStreamingContext(conf, Durations.seconds(1));
 {% endhighlight %}
 
 Using this context, we can create a DStream that represents streaming data from a TCP