unexpected behavior case added

Author: iamishalkin

.github/ISSUE_TEMPLATE/bug_report.md

@@ -11,17 +11,17 @@ assignees: ''
 A clear and concise description of what the bug is.
 
 **To Reproduce**
-Please, provide:
-1. Reproducible code snippet
-2. Error traceback
+Please, provide reproducible code snippet
+
+**Behavior**
+Bug case: provide error traceback, please
+Unexpected behavior case: provide a clear and concise description of what you expected to happen, please.
 
-**Expected behavior**
-A clear and concise description of what you expected to happen.
 
 **Environment:**
  - OS: [e.g. Ubuntu-16.04]
  - Python version: [e.g. 3.7.3]
- - Package version [e.g. 0.4.0]
+ - Package version: [e.g. 0.4.0]
 
 Note: to get package version run `import pkg_resources; pkg_resources.get_distribution('dxfeed').version`