Update issue templates

.github/ISSUE_TEMPLATE/------.md

+---
+name: 规约问题模板
+about: 规约问题请使用该模板
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+## 规约原文
+
+## 问题描述
+
+## 修改建议

.github/ISSUE_TEMPLATE/rule-issue-template.md

+---
+name: Rule issue template
+about: Describe this issue template's purpose here.
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+## Rule content
+
+## Problem description
+
+## Advice