[MINOR][DOCS] Remove consecutive duplicated words/typo in Spark Repo

## What changes were proposed in this pull request?
There are many locations in the Spark repo where the same word occurs consecutively. Sometimes they are appropriately placed, but many times they are not. This PR removes the inappropriately duplicated words.

## How was this patch tested?
N/A since only docs or comments were updated.

Author: Niranjan Padmanabhan <niranjan.padmanabhan@gmail.com>

Closes #16455 from neurons/np.structure_streaming_doc.

1 files changed, 1 insertions, 1 deletions

diff --git a/examples/src/main/java/org/apache/spark/examples/ml/JavaLDAExample.java b/examples/src/main/java/org/apache/spark/examples/ml/JavaLDAExample.java
index 9041244279..0e5d00565b 100644
--- a/examples/src/main/java/org/apache/spark/examples/ml/JavaLDAExample.java
+++ b/examples/src/main/java/org/apache/spark/examples/ml/JavaLDAExample.java
@@ -52,7 +52,7 @@ public class JavaLDAExample {
     double ll = model.logLikelihood(dataset);
     double lp = model.logPerplexity(dataset);
     System.out.println("The lower bound on the log likelihood of the entire corpus: " + ll);
-    System.out.println("The upper bound bound on perplexity: " + lp);
+    System.out.println("The upper bound on perplexity: " + lp);
 
     // Describe topics.
     Dataset<Row> topics = model.describeTopics(3);