Refa: refine template. (#6381)

### What problem does this PR solve?

### Type of change

- [x] Refactoring

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,7 +1,7 @@
-name: Bug Report
+name: ""🐞 Bug Report"
 description: Create a bug issue for RAGFlow
 title: "[Bug]: "
-labels: [bug]
+labels: ["🐞 bug"]
 body:
 - type: checkboxes
   attributes:

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -1,7 +1,7 @@
-name: Feature request
+name: "💞 Feature request"
 description: Propose a feature request for RAGFlow.
 title: "[Feature Request]: "
-labels: [feature request]
+labels: ["💞 feature"]
 body:
   - type: checkboxes
     attributes:

.github/ISSUE_TEMPLATE/question.yml

@@ -1,7 +1,7 @@
-name: Question
+name: "🙋‍♀️ Question"
 description: Ask questions on RAGFlow
 title: "[Question]: "
-labels: [question]
+labels: ["🙋‍♀️ question"]
 body:
 - type: checkboxes
   attributes: