Fix newlines in issue_template.md [ci skip]

.github/issue_template.md

 ## Deprecation notice
 ## Deprecation notice
 
 
-Paperclip is currently undergoing
-[deprecation in favor of ActiveStorage](https://github.com/thoughtbot/paperclip/blob/master/MIGRATING.md).
-Maintainers of this repository will no longer be tending to new issues. We're leaving the issues page
-open so Paperclip users can still see & search through old issues, and continue existing discussions
-if they wish.
+Paperclip is currently undergoing [deprecation in favor of ActiveStorage](https://github.com/thoughtbot/paperclip/blob/master/MIGRATING.md). Maintainers of this repository will no longer be tending to new issues. We're leaving the issues page open so Paperclip users can still see & search through old issues, and continue existing discussions if they wish.