docs: clarify Helm-based App-of-Apps pattern with examples

[nitishfy]

Closes #25648

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[afzal442]

LGTM! Thanks!

[reggie-k]

Thanks for the PR!
I think we should rewrite this section and recommend to perform cluster bootstrapping using AppSets instead, in order to avoid anti-pattern 16 here:
https://codefresh.io/blog/argo-cd-anti-patterns-for-gitops/

[kostis-codefresh]

I actually added applicationsets here #26084

[nitishfy]

@kostis-codefresh that is pointing to the same PR, can you double check the link?

[kostis-codefresh]

I fixed the link. I recommended Cluster generator and applicationsets here #26084

[nitishfy]

@kostis-codefresh your changes are already present in the file so i don't think there's anything extra we need to do.