Update pull_request_template.md

.github/pull_request_template.md

@@ -3,14 +3,13 @@
 <!-- Before creating this PR, make sure to thoroughly follow the contributing guide. -->
 <!-- Add a description of the PR changes in this section. -->
 
-REPLACE ME
-
+This PR....
 
 ## Tasks
 
 <!-- Once the PR has been created, check boxes as appropriate. -->
 
-* [ ] The [contributing guide](/.github/CONTRIBUTING.md) has been read and followed.
+* [ ] The [contributing guide](https://github.com/GoogleCloudPlatform/kubernetes-engine-samples/blob/main/.github/CONTRIBUTING.md) has been read and followed.
 * [ ] The samples added / modified have been fully tested.
 * [ ] Workflow files have been added / modified, if applicable.
 * [ ] Region tags have been properly added, if new samples.