Update pull_request_template.md (redhat-developer#990)

Author: linfraze

.github/pull_request_template.md

@@ -2,11 +2,14 @@
 
 <!--- If your changes apply to the latest released and/or in-development version of RHDH, open your PR against the `main` branch and cherrypick your PR to any released branches that you want to apply your changes to. --->
 
+<!--- Add the relevant labels to the Pull Request. Update the labels, as needed, to reflect the current status of the PR. --->
+
+
 **IMPORTANT: Do Not Merge - To be merged by Docs Team Only**
 
 **Version(s):**
 <!--- Specify the version(s) of RHDH that your PR applies to. -->
-Add the relevant labels to the Pull Request.
 **Issue:**
 <!--- Add a link to the Jira issue. --->
-
+**Preview:**
+<!--- Add a link to the preview of the changed file(s). --->