Incorrect URL to `all-in-one-dbless.yaml` (OSS version)

Step 1 under deploy is pointing to an incorrect Github url to all-in-one-dbless.yaml.

Url should be https://raw.githubusercontent.com/Kong/kubernetes-ingress-controller/v2.8.1/deploy/single/all-in-one-dbless.yaml instead of https://raw.githubusercontent.com/Kong/kubernetes-ingress-controller/2.8.1/deploy/single/all-in-one-dbless.yaml

I have raised a PR for this - fixed the url for OSS by spjohn85 · Pull Request #5261 · Kong/docs.konghq.com · GitHub