chore: update issue template (#1223)

.github/ISSUE_TEMPLATE.md

@@ -1,11 +1,16 @@
-<!-- Thanks for reporting an issue to axe-core. Please provide all necessary info to reproduce the issue. Without adequate details, your issue may be closed without investigation. 
+<!--
+Thanks for reporting an issue to axe-core. Please provide all necessary info to reproduce the issue. Without adequate details, your issue may be closed without investigation.
 
 If you’re reporting a bug, include a description of the issue and a page or code snippet where it can be reproduced. Please make sure you have tested this with the latest version of axe-core. When proposing a new rule, please use our rule template: https://github.com/dequelabs/axe-core/blob/develop/doc/rule-proposal.md
 
 Describe what the desired behavior would be, and how it applies to axe-core's  "Accessibility Supported" policy: https://github.com/dequelabs/axe-core/blob/develop/doc/accessibility-supported.md
 -->
 
-- Link to live demo:
+Expectation: << Describe what you expect the product to do >>
+
+Actual: << Describe what the product actually does >>
+
+Motivation: << Describe why you want the behavior to be changed >>
 
 <pre><code>
 axe-core version: X.Y.Z
@@ -16,4 +21,4 @@ Browser and Assistive Technology versions
 For Tooling issues:
 - Node version: XX  <!-- run `node --version` -->
 - Platform:  <!-- Mac, Linux, Windows -->
-</code></pre>
+</code></pre>