docs(issue_template): add note about alerting

.github/ISSUE_TEMPLATE.md

-* **I'm submitting a ...**
-- [ ] Bug report
-- [ ] Feature request
-- [ ] Question / Support request: **Please do not** open a github issue. [Support Options](http://grafana.org/support/)
+Please prefix your title with [Bug] or [Feature request]
+For question please check [Support Options](http://grafana.org/support/). **Do not** open a github issue
 
 
 Please include this information:
 Please include this information:
 - What Grafana version are you using?
 - What Grafana version are you using?
@@ -11,7 +9,10 @@ Please include this information:
 - What was the expected result?
 - What was the expected result?
 - What happened instead?
 - What happened instead?
 
 
-**IMPORTANT** If it relates to metric data viz:
+**IMPORTANT** 
+If it relates to *metric data viz*:
 - An image or text representation of your metric query
 - An image or text representation of your metric query
 - The raw query and response for the network request (check this in chrome dev tools network tab, here you can see metric requests and other request, please include the request body and request response)
 - The raw query and response for the network request (check this in chrome dev tools network tab, here you can see metric requests and other request, please include the request body and request response)
 
 
+If it relates to *alerting*
+- An image of the test execution data fully expanded.