Incorrect documentation repo URL in the PR template

[avishnu]

What steps did you take and what happened:
[A clear and concise description of what the bug is, and what commands you ran.]
The PR template contains an incorrect documentation repository URL (https://github.com/openebs/openebs-docs)

What did you expect to happen:
The link should have been https://github.com/openebs/website since https://github.com/openebs/openebs-docs has been archived

The output of the following commands will help us better understand what's going on:
(Pasting long output into a GitHub gist or other Pastebin is fine.)

• kubectl logs -f openebs-zfs-controller-f78f7467c-blr7q -n openebs -c openebs-zfs-plugin
• kubectl logs -f openebs-zfs-node-[xxxx] -n openebs -c openebs-zfs-plugin
• kubectl get pods -n openebs
• kubectl get zv -A -o yaml

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• LocalPV-ZFS version
• Kubernetes version (use kubectl version):
• Kubernetes installer & version:
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):