update issue template (#3493)

.github/ISSUE_TEMPLATE/bug-report-----.md

@@ -6,19 +6,20 @@ about: Create a report to help us improve
 
 IMPORTANT: Please use the following link to create a new issue. If your issue was not created using the app above, it will be closed immediately.
 
-注意：请按照下面的模板来新建 issue，不规范的 issue 会被立即关闭.
+注意：请按照下面的模板来新建 issue，不规范的 issue 会被立即关闭。
 
-**Describe the bug**
+**Describe the bug 描述问题**
-A clear description of what the bug is.
 
-**Screenshots**
-Add screenshots to help explain your problem.
 
-**Environment**
+**Screenshots 截图**
+
+
+**Environment 环境**
+
  - Device: 
  - Browser: 
  - Vant Version: 
 
-**Reproduce**
+**Reproduce 复现步骤**
-Provide the steps to reproduce and if possible a minimal demo of the problem via jsfiddle.
+
-https://jsfiddle.net/dfarLdko/522/
+请使用 [codesandbox](https://codesandbox.io/s/m5v3f) 创建一个复现问题的示例，以帮助我们排查问题。