README missing in helm chart distribution

[hpvd]

Is your feature request related to a problem? Please describe.

the helm chart seems not to include a README

quick check:
artifacthub.io shows READMEs if available:

pulsar: no README
https://artifacthub.io/packages/helm/apache/pulsar

example with included README:
kube prometheus stack
https://artifacthub.io/packages/helm/prometheus-community/kube-prometheus-stack

Describe the solution you'd like
ad README to helm chart (file/url)

background: https://helm.sh/docs/topics/charts/#chart-license-readme-and-notes
check with https://helm.sh/docs/helm/helm_show_readme/

Describe alternatives you've considered
none

Additional context
none

[michaeljmarshall]

Here is documentation on adding the README to the distribution: https://helm.sh/docs/topics/charts/. We just need to put it in charts/pulsar/.