docs: update bug report template

Author: snitin315

.github/ISSUE_TEMPLATE/BUG.md

@@ -14,11 +14,7 @@ about: Something went awry and you'd like to tell us about it.
   Head to StackOverflow or https://gitter.im/webpack/webpack.
 -->
 
-- Operating System:
-- Node Version:
-- NPM Version:
-- webpack Version:
-- source-map-loader Version:
+### Please paste the results of `npx webpack info` here, and mention other relevant information
 
 ### Expected Behavior