Update issue template

Author: rstoyanchev

.github/ISSUE_TEMPLATE.md

@@ -1,15 +1,13 @@
+<!--
 Thanks for raising an issue. Please read (and discard) the below:
 
-**Security Issue?** Please report responsibly via https://pivotal.io/security  
-_(Do not diclose here. It will be deleted!!)._
+Security Issue? Please report responsibly via https://pivotal.io/security. Do not diclose here.
 
-**Questions:** Please use Stack Overflow.  
+Questions: Please use Stack Overflow.
 
-**Issue vs Pull Request** Do not create both.  
-_(You can start with an issue, and submit a pull request later, superseding the issue)_
+Issue vs Pull Request: Do not create both. You can start with an issue, and submit a pull request later, superseding the issue.
 
-**Bug Reports:** Specify affected versions and explain what your goal is.  
-_(A test case or isolated sample makes it easier for us to help)_
+Bug Reports: Specify affected versions and explain what you're trying do. A test case or sample makes it easier for us to diagnose and verify.
 
-**Enhancements:** Please describe the problem.  
-_(There may already be a solution, or a way to solve it you had not considered.)_
+Enhancements and Contributions: Please provide context and explain the problem. There may already be a solution, or a way to solve it you had not considered.
+-->