refs #3222 add issue template

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,27 @@
+Subject: <what happen when you do on which document project>
+
+# Problem
+- <Detail of problem>
+
+## Procedure to reproduce the problem
+```
+<Paste your command-line here which cause the problem>
+```
+
+## Error logs / results
+```
+<Paste your error log here>
+```
+- <public link of unexpected result if you have>
+
+## Expected results
+<Describe what to actually do>
+
+# Reproducible project / your project
+- <link to your project, or attach zipped small project sample>
+
+# Environment info
+- OS: <Unix/Linux/Mac/Win/other with version>
+- Python version:
+- Sphinx version:
+- <Extra tools e.g.: Browser, tex or something else>