Chore: fix issue template render type

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -23,13 +23,13 @@ I have read the [documentation](https://github.com/Dreamacro/clash/wiki/) and wa
           required: true
   - type: textarea
     attributes:
-      label: "Description"
+      label: Description
       description: 请详细、清晰地表达你要提出的论述，例如这个问题如何影响到你？你想实现什么功能？目前 Clash Core 的行为是什麽？
     validations:
       required: true
   - type: textarea
     attributes:
-      label: "Possible Solution"
+      label: Possible Solution
       description: "
 此项非必须，但是如果你有想法的话欢迎提出。
 Not obligatory, but suggest a fix/reason for the bug, or ideas how to implement the addition or change