Update bug_report.yaml

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -12,6 +12,12 @@ body:
       label: A clear and concise description of the bug.
     validations:
       required: true
+  - type: textarea
+    id: screenshot
+    attributes:
+      label: If applicable, add screenshots to help explain the issue.
+    validations:
+      required: false
   - type: textarea
     id: expect_to_happen
     attributes:
@@ -26,4 +32,3 @@ body:
       placeholder: First do this, then this..
     validations:
       required: false
-