[SPARK-47173][SS][UI] Fix a typo in streaming UI explanation

### What changes were proposed in this pull request?

miss spelled
flatMapGroupsWithState with flatMapGroupWithState (missed a "s" after group)

### Why are the changes needed?

typo fix

### Does this PR introduce _any_ user-facing change?

No

### How was this patch tested?

No need

### Was this patch authored or co-authored using generative AI tooling?

No

Closes apache#45263 from WweiL/SPARK-47173-typo.

Authored-by: Wei Liu <wei.liu@databricks.com>
Signed-off-by: Max Gekk <max.gekk@gmail.com>

sql/core/src/main/scala/org/apache/spark/sql/streaming/ui/StreamingQueryStatisticsPage.scala

@@ -307,7 +307,7 @@ private[ui] class StreamingQueryStatisticsPage(parent: StreamingQueryTab)
         <tr>
           <td style="vertical-align: middle;">
             <div style="width: 160px;">
-              <div><strong>Aggregated Number Of Removed State Rows{SparkUIUtils.tooltip("Aggregated number of state rows removed from the state. Normally it means the number of rows evicted from the state because watermark has passed, except in flatMapGroupWithState, where users can manually remove the state.", "right")}</strong></div>
+              <div><strong>Aggregated Number Of Removed State Rows{SparkUIUtils.tooltip("Aggregated number of state rows removed from the state. Normally it means the number of rows evicted from the state because watermark has passed, except in flatMapGroupsWithState, where users can manually remove the state.", "right")}</strong></div>
             </div>
           </td>
           <td class={"aggregated-num-removed-state-rows-timeline"}>{graphUIDataForNumberRemovedRows.generateTimelineHtml(jsCollector)}</td>