docs: Update issue template

.github/ISSUE_TEMPLATE/cn-bug-report.yaml

@@ -15,6 +15,8 @@ body:
         required: true
       - label: 我已查看最新测试版本的更新内容，并未提及该 bug 已被修复的情况
         required: true
+      - label: 我上传的游戏画面截图是模拟器自带的截图工具（或通过 adb）截取的原图
+        required: false
   - type: textarea
     id: describe
     attributes:
@@ -34,7 +36,7 @@ body:
   - type: textarea
     id: screenshots
     attributes:
-      label: 截图原图
+      label: 截图
       description: |
         如果有，添加屏幕截图以帮助解释你的问题，包括但不限于 MAA 软件截图、游戏画面截图
         **若是识别相关问题，请帮忙提供模拟器自带的截图工具截取的原图（或通过 adb 截取原图）**

.github/ISSUE_TEMPLATE/en-bug-report.yaml

@@ -27,6 +27,10 @@ body:
           I have checked the latest beta update and there is no mention
           of the bug being fixed.
         required: true
+      - label: >-
+          The screenshots I've uploaded are the original ones taken by
+          the emulator's own screenshot tool (or via adb).
+        required: false
   - type: textarea
     id: describe
     attributes: