Update issue templates

.github/ISSUE_TEMPLATE/bug-report--en-.md

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+---
+name: Bug report (EN)
+about: If you would like to report a issue to Arthas, please use this template.
+
+---
+
+- [ ] I have searched the [issues](https://github.com/alibaba/arthas/issues) of this repository and believe that this is not a duplicate.
+
+### Environment
+
+* Arthas version: xxx
+* Operating System version: xxx
+* Java version of target JVM: xxx
+* Java version of JVM used to attach: xxx
+
+### Steps to reproduce this issue
+
+1. xxx
+2. xxx
+3. xxx
+
+### Expected Result
+
+What do you expected from the above steps？
+
+### Actual Result
+
+What actually happens?
+
+If there is an exception, please attach the exception trace:
+
+```
+Just put your stack trace here!
+```

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: If you would like to report a issue to Dubbo, please use this template.
+
+---
+
+**Describe the bug**
+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]
+
+**Smartphone (please complete the following information):**
+ - Device: [e.g. iPhone6]
+ - OS: [e.g. iOS8.1]
+ - Browser [e.g. stock browser, safari]
+ - Version [e.g. 22]
+
+**Additional context**
+Add any other context about the problem here.