Fix: Update the pagination prompt text in zh.ts, changing "page" to "item/page" #3221 (#9978)

### What problem does this PR solve?

Fix: Update the pagination prompt text in zh.ts, changing "page" to
"item/page"

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

web/src/components/ui/ragflow-pagination.tsx

@@ -33,11 +33,7 @@ export function RAGFlowPagination({
 
   const sizeChangerOptions: RAGFlowSelectOptionType[] = useMemo(() => {
     return [10, 20, 50, 100].map((x) => ({
-      label: (
-        <span>
-          {x} / {t('pagination.page')}
-        </span>
-      ),
+      label: <span>{t('pagination.page', { page: x })}</span>,
       value: x.toString(),
     }));
   }, []);