[MINOR][STREAMING] Replace deprecated apply with create in example.

## What changes were proposed in this pull request?

Twitter Algebird deprecated `apply` in HyperLogLog.scala.
```
deprecated("Use toHLL", since = "0.10.0 / 2015-05")
def apply[T <% Array[Byte]](t: T) = create(t)
```
This PR replace the deprecated usage `apply` with new `create`
according to the upstream change.

## How was this patch tested?
manual.
```
/bin/spark-submit --class org.apache.spark.examples.streaming.TwitterAlgebirdHLL examples/target/scala-2.11/spark-examples-2.0.0-SNAPSHOT-hadoop2.2.0.jar
```

Author: Dongjoon Hyun <dongjoon@apache.org>

Closes #11451 from dongjoon-hyun/replace_deprecated_hll_apply.

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

@@ -62,7 +62,7 @@ object TwitterAlgebirdHLL {
     var userSet: Set[Long] = Set()
 
     val approxUsers = users.mapPartitions(ids => {
-      ids.map(id => hll(id))
+      ids.map(id => hll.create(id))
     }).reduce(_ + _)
 
     val exactUsers = users.map(id => Set(id)).reduce(_ ++ _)