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[SPARK-19574][ML][DOCUMENTATION] Fix Liquid Exception: Start indices amount is not equal to end indices amount

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### What changes were proposed in this pull request?
```
Liquid Exception: Start indices amount is not equal to end indices amount, see /Users/xiao/IdeaProjects/sparkDelivery/docs/../examples/src/main/java/org/apache/spark/examples/ml/JavaTokenizerExample.java. in ml-features.md
```

So far, the build is broken after merging https://github.com/apache/spark/pull/16789

This PR is to fix it.

## How was this patch tested?
Manual

Author: Xiao Li <gatorsmile@gmail.com>

Closes #16908 from gatorsmile/docMLFix.
This commit is contained in:
Xiao Li 2017-02-13 11:18:31 +00:00 committed by Sean Owen
parent 2bdbc87052
commit 855a1b7551
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examples/src/main/java/org/apache/spark/examples/ml/JavaTokenizerExample.java
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@ -39,7 +39,7 @@ import org.apache.spark.sql.types.StructType;
// col("...") is preferable to df.col("...")
import static org.apache.spark.sql.functions.callUDF;
import static org.apache.spark.sql.functions.col;
// $example off
// $example off$
public class JavaTokenizerExample {
public static void main(String[] args) {