[SPARK-54299][SQL] Fix the wrong example query in WindowGroupLimit

### What changes were proposed in this pull request?
Fix the wrong example query in `WindowGroupLimit`

### Why are the changes needed?
Fix the incorrect comments

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?
<!--
No need test

### Was this patch authored or co-authored using generative AI tooling?
No

Closes #52993 from huangxiaopingRD/SPARK-54299.

Authored-by: huangxiaoping <1754789345@qq.com>
Signed-off-by: beliefer <beliefer@163.com>

Author: huangxiaopingRD

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/InferWindowGroupLimit.scala

@@ -26,12 +26,29 @@ import org.apache.spark.sql.catalyst.trees.TreePattern.{FILTER, WINDOW}
  * Inserts a `WindowGroupLimit` below `Window` if the `Window` has rank-like functions
  * and the function results are further filtered by limit-like predicates. Example query:
  * {{{
- *   SELECT *, ROW_NUMBER() OVER(PARTITION BY k ORDER BY a) AS rn FROM Tab1 WHERE rn = 5
- *   SELECT *, ROW_NUMBER() OVER(PARTITION BY k ORDER BY a) AS rn FROM Tab1 WHERE 5 = rn
- *   SELECT *, ROW_NUMBER() OVER(PARTITION BY k ORDER BY a) AS rn FROM Tab1 WHERE rn < 5
- *   SELECT *, ROW_NUMBER() OVER(PARTITION BY k ORDER BY a) AS rn FROM Tab1 WHERE 5 > rn
- *   SELECT *, ROW_NUMBER() OVER(PARTITION BY k ORDER BY a) AS rn FROM Tab1 WHERE rn <= 5
- *   SELECT *, ROW_NUMBER() OVER(PARTITION BY k ORDER BY a) AS rn FROM Tab1 WHERE 5 >= rn
+ *   SELECT * FROM (
+ *      SELECT *, ROW_NUMBER() OVER(PARTITION BY k ORDER BY a) AS rn FROM Tab1
+ *   ) WHERE rn = 5;
+ *
+ *   SELECT * FROM (
+ *      SELECT *, ROW_NUMBER() OVER(PARTITION BY k ORDER BY a) AS rn FROM Tab1
+ *   ) WHERE 5 = rn;
+ *
+ *   SELECT * FROM (
+ *      SELECT *, ROW_NUMBER() OVER(PARTITION BY k ORDER BY a) AS rn FROM Tab1
+ *   ) WHERE rn < 5;
+ *
+ *   SELECT * FROM (
+ *      SELECT *, ROW_NUMBER() OVER(PARTITION BY k ORDER BY a) AS rn FROM Tab1
+ *   ) WHERE 5 > rn;
+ *
+ *   SELECT * FROM (
+ *      SELECT *, ROW_NUMBER() OVER(PARTITION BY k ORDER BY a) AS rn FROM Tab1
+ *    ) WHERE rn <= 5;
+ *
+ *   SELECT * FROM (
+ *      SELECT *, ROW_NUMBER() OVER(PARTITION BY k ORDER BY a) AS rn FROM Tab1
+ *   ) WHERE 5 >= rn;
  * }}}
  */
 object InferWindowGroupLimit extends Rule[LogicalPlan] with PredicateHelper {