Update bug-report.yml (#4)

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -68,6 +68,13 @@ body:
       Please copy-paste the actual ESLint output. You can use Markdown in this field.
   validations:
     required: true
+- type: input
+  attributes:
+    label: Link to Minimal Reproducible Example
+    description: 'Link to a [playground](https://eslint.org/play), [StackBlitz](https://stackblitz.com), or GitHub repo with a minimal reproduction of the problem. **A minimal reproduction is required** so that others can help debug your issue. If a report is vague (e.g. just a generic error message) and has no reproduction, it may be auto-closed.'
+    placeholder: 'https://stackblitz.com/abcd1234'
+  validations:
+    required: true
 - type: checkboxes
   attributes:
     label: Participation