chore(doc): update issue templates

.github/ISSUE_TEMPLATE/Bug反馈.md

@@ -1,7 +1,7 @@
 ---
 name: Bug反馈
-about: 请按照模板填写Bug反馈，否则你的Issue可能会被直接关闭。与Icarus使用相关的问题请转至Gitter（https://gitter.im/hexo-theme-icarus/community）。
+about: 请按照模板填写Bug反馈，否则你的Issue可能会被直接关闭。
-title: ''
+title: [Bug] 问题概述
 labels: ''
 assignees: ''
 

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,7 +1,7 @@
 ---
 name: Bug report
-about: Please follow this template if you are reporting a bug, or your issue may be closed without further notice. And redirect your Icarus customization questions to Gitter (https://gitter.im/hexo-theme-icarus/community).
+about: Please follow this template if you are reporting a bug, or your issue may be closed without further notice.
-title: ''
+title: [Bug] Bug summary
 labels: ''
 assignees: ''
 

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Gitter
+    url: https://gitter.im/hexo-theme-icarus/community
+    about: Redirect your Icarus usage questions to Gitter.
+  - name: Gitter
+    url: https://gitter.im/hexo-theme-icarus/community
+    about: 与Icarus使用相关的问题请转至这里。

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,7 +1,7 @@
 ---
 name: Feature request
-about: Please follow this template if you are requesting a new feature, or your issue may be closed without further notice. And redirect your Icarus customization questions to Gitter (https://gitter.im/hexo-theme-icarus/community).
+about: Please follow this template if you are requesting a new feature, or your issue may be closed without further notice.
-title: ''
+title: [FEAT] Feature request summary
 labels: ''
 assignees: ''
 

.github/ISSUE_TEMPLATE/功能建议.md

@@ -1,7 +1,7 @@
 ---
 name: 功能建议
-about: 请按照模板填写功能建议，否则你的Issue可能会被直接关闭。与Icarus使用相关的问题请转至Gitter（https://gitter.im/hexo-theme-icarus/community）。
+about: 请按照模板填写功能建议，否则你的Issue可能会被直接关闭。
-title: ''
+title: [FEAT] 功能建议概述
 labels: ''
 assignees: ''