feat: Improve issue template

Author: wanghe-fit2cloud

.github/ISSUE_TEMPLATE/bug.yml

@@ -1,8 +1,8 @@
 name: BUG 提交
 description: 提交产品缺陷帮助我们更好的改进
 title: "[BUG] "
-labels: "bug"
-assignees: "zrfit"
+labels: ["bug"]
+assignees: ["zrfit"]
 body:
   - type: markdown
     id: contacts_title

.github/ISSUE_TEMPLATE/feature.yml

@@ -1,8 +1,8 @@
 name: 需求建议
 description: 提出针对本项目的想法和建议
 title: "[FEATURE] "
-labels: "需求"
-assignees: "luty2018"
+labels: ["需求"]
+assignees: ["luty2018", "sakura1412"]
 body:
   - type: markdown
     id: environment

.github/ISSUE_TEMPLATE/question.yml

@@ -1,8 +1,8 @@
 name: 问题咨询
 description: 提出针对本项目安装部署、使用及其他方面的相关问题
 title: "[QUESTION] "
-labels: "question"
-assignees: "luty2018"
+labels: ["question"]
+assignees: ["luty2018", "sakura1412"]
 body:
   - type: textarea
     id: description