Add Doc checklist to PR template (#1568)

Author: andreyvelich

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,25 +1,14 @@
-<!--  Thanks for sending a pull request!  Here are some tips for you:
-1. If this is your first time, read our contributor guidelines https://git.k8s.io/community/contributors/guide/pull-requests.md#the-pull-request-submit-process and developer guide https://git.k8s.io/community/contributors/devel/development.md#development-guide
-2. If you want *faster* PR reviews, read how: https://git.k8s.io/community/contributors/guide/pull-requests.md#best-practices-for-faster-reviews
-3. Follow the instructions for writing a release note: https://git.k8s.io/community/contributors/guide/release-notes.md
-4. If the PR is unfinished, see how to mark it: https://git.k8s.io/community/contributors/guide/pull-requests.md#marking-unfinished-pull-requests
-5. If this PR changes image versions, please title this PR "Bump <image name> from x.x.x to y.y.y."
+<!--  Thanks for sending a pull request! Here are some tips for you:
+1. If this is your first time, check our contributor guidelines https://www.kubeflow.org/docs/about/contributing
+2. To know more about Katib components, check developer guide https://github.com/kubeflow/katib/blob/master/docs/developer-guide.md
+3. If you want *faster* PR reviews, check how: https://git.k8s.io/community/contributors/guide/pull-requests.md#best-practices-for-faster-reviews
 -->
 
 **What this PR does / why we need it**:
 
-**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
+**Which issue(s) this PR fixes** _(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)_:
 Fixes #
 
-**Special notes for your reviewer**:
+**Checklist:**
 
-1. Please confirm that if this PR changes any image versions, then that's the sole change this PR makes.
-
-**Release note**:
-<!--  Write your release note:
-1. Enter your extended release note in the below block. If the PR requires additional action from users switching to the new release, include the string "action required".
-2. If no release note is required, just write "NONE".
--->
-```release-note
-
-```
+- [ ] [Docs](https://www.kubeflow.org/docs/components/katib/) included if any changes are user facing