[📑 Docs]: Update the documentation about the format command in the CLI

[AayushSaini101]

What Dev Docs changes are you proposing?

After introducing the #1549 new command that is asyncapi format the docs has not updated need to update the docs to understand more better about the command usage.

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[SahilDahekar]

Hey @AayushSaini101 , Can I work on this issue ?

[SahilDahekar]

@AayushSaini101 I can see the docs for the format command present on both website and docs folder on github. Is there any other specfic place left to update the docs for this command.