Charts: Document how to add stable repo

[oke-py]

Is your feature request related to a problem? Please describe.
Helm 3 does not install stable repo by default, and so user must run command:

helm repo add stable https://kubernetes-charts.storage.googleapis.com

However, I can't remember the URL.

Describe the solution you'd like
This should be documented in README of this repo.
I know it is documented in https://helm.sh/docs/intro/quickstart/ , but it is useful if it is also documented in this repo README.

Describe alternatives you've considered
https://helm.sh/docs/intro/quickstart/ is enough?

Additional context

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This issue is being automatically closed due to inactivity.

[erendrake]

Thanks for the documentation. this helped me!

[hphde]

With adding the stable repo you'll have the old search capabilities back (even if still ugly because of the hidden tab-regex problem).

After adding the repo as above you can search like before:
helm search repo -l -r '\vstable/prometheus\v'

Or use JSON:
helm search repo -l -o json|jq -r '.[]|select(.name == "stable/prometheus")|.version'

[KlavsKlavsen]

its none sensical to me - that I can do helm search hub metallb.. but then I can't actually install things from hub.. and the url given to install things from the hub (stable f.ex.) is completely different from the url I get in my search?