change issue template [skip ci]

Author: Unitech

.github/ISSUE_TEMPLATE.md

@@ -1,17 +1,10 @@
-<!--
-Your issue may already be reported!
-Please search on the [issue tracker](https://github.com/Unitech/pm2/search?type=Issues) before creating one.
--->
-
 ## What's going wrong?
 
 ## How could we reproduce this issue?
 
 ## Supporting information
 
-<!--
-Please run the following command (available on PM2 >= 2.6)
--->
 ```
+# Run the following commands
 $ pm2 report
 ```