Issue template update

Author: xuri

.github/ISSUE_TEMPLATE/bug_report.md

@@ -27,19 +27,17 @@ Briefly describe the problem you are having in a few paragraphs.
 
 **Describe the results you received:**
 
-
 **Describe the results you expected:**
 
-
 **Output of `go version`:**
 
-```
+```text
 (paste your output here)
 ```
 
-**Aurora version or commit ID:**
+**xgen version or commit ID:**
 
-```
+```text
 (paste here)
 ```
 

.github/ISSUE_TEMPLATE/feature_request.md

@@ -5,6 +5,7 @@ about: Suggest an idea for this project
 ---
 
 **Is your feature request related to a problem? Please describe.**
+
 A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
 
 **Describe the solution you'd like**