Configuration page needs updates

[wemeetagain]

Issues seen while migrating lodestar to latest libp2p:

• configuration page references peer store "persistence", no longer an option, should use PersistentPeerStore instead
• persistent: boolean listed in an unused interface in src/index.ts
• dialer: {...} referenced in configuration page, should instead be under connectionManager
• ...

[achingbrain]

Hand-written docs do get out of sync from time to time. Would you like to submit a PR that brings everything up to date?

[wemeetagain]

I have a branch in progress. waiting on a fix for bbc/typescript-docs-verifier#22

[BigLep]

@wemeetagain : we're unblocked here now right?

[wemeetagain]

Yes this is unblocked.
It may be useful to break this work up into separate PRs since there's a lot of changes required.
I can start with doc/CONFIGURATION.md.