base: refine issue templates. (#580)

Author: dajiaji

.github/ISSUE_TEMPLATE/bug_report.md

@@ -6,31 +6,23 @@ labels: ''
 assignees: ''
 ---
 
-**Describe the bug** A clear and concise description of what the bug is.
+## Describe the bug
 
-**To Reproduce** Steps to reproduce the behavior:
+A clear and concise description of what the bug is.
+
+## To Reproduce
+
+Steps to reproduce the behavior:
 
 1. Go to '...'
 2. Click on '....'
 3. Scroll down to '....'
 4. See error
 
-**Expected behavior** A clear and concise description of what you expected to
-happen.
-
-**Screenshots** If applicable, add screenshots to help explain your problem.
-
-**Desktop (please complete the following information):**
-
-- OS: [e.g. iOS]
-- Browser [e.g. chrome, safari]
-- Version [e.g. 22]
+## Expected behavior
 
-**Smartphone (please complete the following information):**
+A clear and concise description of what you expected to happen.
 
-- Device: [e.g. iPhone6]
-- OS: [e.g. iOS8.1]
-- Browser [e.g. stock browser, safari]
-- Version [e.g. 22]
+## Additional context
 
-**Additional context** Add any other context about the problem here.
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -6,14 +6,20 @@ labels: ''
 assignees: ''
 ---
 
-**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 [...]
+## Is your feature request related to a problem? Please describe.
 
-**Describe the solution you'd like** A clear and concise description of what you
-want to happen.
+A clear and concise description of what the problem is. Ex. I'm always
+frustrated when [...]
 
-**Describe alternatives you've considered** A clear and concise description of
-any alternative solutions or features you've considered.
+## Describe the solution you'd like
 
-**Additional context** Add any other context or screenshots about the feature
-request here.
+A clear and concise description of what you want to happen.
+
+## Describe alternatives you've considered
+
+A clear and concise description of any alternative solutions or features you've
+considered.
+
+## Additional context
+
+Add any other context or screenshots about the feature request here.