docs: add home link and sources in Helm chart

[froblesmartin]

This is useful to display some links on the artifacthub page: https://artifacthub.io/packages/helm/grafana/pyroscope

For example, you can check the cert-manager one: https://artifacthub.io/packages/helm/cert-manager/cert-manager

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[froblesmartin]

Hi @froblesmartin, thanks for the contribution! Could you run make helm/docs to update the documentation?

Done! Thanks for checking! :)

[marcsanmi]

I missed that you're using the old home page https://pyroscope.io/ instead of the new one https://grafana.com/oss/pyroscope/. Could you update it please?

[froblesmartin]

I missed that you're using the old home page https://pyroscope.io/ instead of the new one https://grafana.com/oss/pyroscope/. Could you update it please?

Done 👌