docs(demo): stripe dark (#6542)

Author: CCherry07

components/table/demo/stripe.vue

@@ -78,7 +78,10 @@ export default defineComponent({
 </script>
 
 <style scoped>
-.ant-table-striped :deep(.table-striped) td {
+[data-doc-theme='light'] .ant-table-striped :deep(.table-striped) td {
   background-color: #fafafa;
 }
+[data-doc-theme='dark'] .ant-table-striped :deep(.table-striped) td {
+  background-color: rgb(29, 29, 29);
+}
 </style>