Fixed typo in Query.java
Fixed typo in `Query.java` in javadoc
@@ -139,7 +139,7 @@ public class Query {
}
/**
- * Add a listener for changes in the data at this location. Each time time the data changes, your
+ * Add a listener for changes in the data at this location. Each time the data changes, your
* listener will be called with an immutable snapshot of the data.
*
* @param listener The listener to be called with changes
