Update bug_report.md

Remove duplication of header, include recommendations into comments.

Author: MrVitaly

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,23 +1,18 @@
 ---
 name: Bug report
-about: Create a report to help us improve
+about: Create a report to help us improve GitHub Extension for Visual Studio
 labels: 
 
 ---
 
----
-name: Bug report
-about: Create a report to help us improve
-labels: 
-
----
+<!-- Hello! Please read the [Contributing Guidelines](https://github.com/github/VisualStudio/blob/master/CONTRIBUTING.md) before submitting an issue regarding the GitHub Extension for Visual Studio. -->
 
 ## Versions
  - GitHub Extension for Visual Studio version: ...
  - Visual Studio version: ...
 
 ## What happened
-A clear and concise description of what the bug is.
+<!--A clear and concise description of what the bug is.-->
 
 ### Steps to Reproduce
 Steps to reproduce the behavior:
@@ -27,13 +22,13 @@ Steps to reproduce the behavior:
 4. See error
 
 ### Expected behavior
-A clear and concise description of what you expected to happen.
+<!--A clear and concise description of what you expected to happen.-->
 
 ### Screenshots
-If applicable, add screenshots to help explain your problem.
+<!--If applicable, add screenshots to help explain your problem.-->
 
 ### Logs
-If applicable, add logs. To include log files:
+<!--If applicable, add logs. To include log files:
   1. Close Visual Studio if it's open
   2. Open a Developer Command Prompt for VS2015
   3. Run devenv /log
@@ -44,6 +39,7 @@ If applicable, add logs. To include log files:
    - `%localappdata%\temp\extension.log`
    - `%localappdata%\GitHubVisualStudio\extension.log`
    - Windows Event Viewer
+-->
 
 ### Additional context
-Add any other context about the problem here.
+<!--Add any other context about the problem here.-->