Parachain connect should mention the creation of a chain spec

[bkchr]

Content request

https://docs.substrate.io/how-to-guides/v3/parachains/connect

We should add as step 2 a detailed description on how to create a proper chain spec. Beginning with a json chain spec, where the user again ensures that all values are as expected, e.g. the parachain id. Then the creation of the raw chain spec out of the json chain spec. In the next steps we should then also use this created chain spec.

Are you willing to help with this request?

Yes!

[SBalaguer]

Thanks Basti for creating the PR! I believe this piece of information also applies to the How to Generate Genesis State on Parachains.

[bkchr]

Yeah, that is what I also mentioned above :)

[samelamin]

I faced the exact same issue

Also willing to help with this PR in any way I can :)

[nuke-web3]

Note for us to reference this: paritytech/cumulus#739

[riusricardo]

This issue needs to be solved soon. We are getting close to Polkadot v0.9.13 which contains this breaking change.
Required changes in:

1. Cumulus Workshop
2. How To Guides

[bernardoaraujor]

@riusricardo I started working on a potential PR for the How-To-Guides: bernardoaraujor@3cbd97e

How does this issue affect the Cumulus Workshop?
It seems a pre-configured chain-spec is already provided there?

• https://docs.substrate.io/assets/tutorials/cumulus/chain-specs/rococo-custom-2-plain.json
• https://docs.substrate.io/assets/tutorials/cumulus/chain-specs/rococo-custom-2-raw.json

cc @nukemandan