docs: update Select optionRender demo description (#49376)

components/select/demo/option-render.md

@@ -1,7 +1,7 @@
 ## zh-CN
 
-使用 `optionRender` 自定义回填到选择框的内容。
+使用 `optionRender` 自定义渲染下拉选项。
 
 ## en-US
 
-Use `optionRender` to customize the content to be backfilled into the selection box.
+Use `optionRender` to customize the rendering dropdown options

components/select/index.en-US.md

@@ -42,7 +42,7 @@ return (
 <code src="./demo/search.tsx">Select with search field</code>
 <code src="./demo/multiple.tsx">multiple selection</code>
 <code src="./demo/size.tsx">Sizes</code>
-<code src="./demo/option-render.tsx">Custom selection render</code>
+<code src="./demo/option-render.tsx">Custom dropdown options</code>
 <code src="./demo/search-sort.tsx">Search with sort</code>
 <code src="./demo/tags.tsx">Tags</code>
 <code src="./demo/optgroup.tsx">Option Group</code>

components/select/index.zh-CN.md

@@ -43,7 +43,7 @@ return (
 <code src="./demo/search.tsx">带搜索框</code>
 <code src="./demo/multiple.tsx">多选</code>
 <code src="./demo/size.tsx">三种大小</code>
-<code src="./demo/option-render.tsx">定制回填内容</code>
+<code src="./demo/option-render.tsx">自定义下拉选项</code>
 <code src="./demo/search-sort.tsx">带排序的搜索</code>
 <code src="./demo/tags.tsx">标签</code>
 <code src="./demo/optgroup.tsx">分组</code>