Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+
+
+**Expected behavior**
+<!--- Tell us what should happen -->
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**OS version, architecture and kor version**
+e.g. Darwin x86_64
+Kor version: 0.1.8
+
+
+**Additional context**
+Add any other context about the problem here.