docs(hubble): update allow-list instructions

[varunsrin]

Motivation

Update the instructions to follow the new allowlist process.

Change Summary

See above.

Merge Checklist

• PR title adheres to the conventional commits standard
• PR has a changeset
• PR has been tagged with a change label(s) (i.e. documentation, feature, bugfix, or chore)
• PR includes documentation if necessary.
• All commits have been signed

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PR-Codex overview

Detailed summary:

This PR focuses on updating the location to add the PeerId to the allowed peers list. It also updates the location for the allowed peers list.

Notable changes:

• The PeerId is now added to the allowed peers list in a different location.
• The location for the allowed peers list is updated to a different repository.
• After the merge, other Hubs will start peering with you after 1 hour.

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[changeset-bot]

⚠️ No Changeset found

Latest commit: 51f6b4c

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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Name	Status	Preview	Updated (UTC)
hub-monorepo	✅ Ready (Inspect)	Visit Preview	Aug 8, 2023 4:12am

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.01% 🎉

Comparison is base (83e3c61) 69.94% compared to head (51f6b4c) 69.95%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1234      +/-   ##
==========================================
+ Coverage   69.94%   69.95%   +0.01%     
==========================================
  Files          85       85              
  Lines        7675     7675              
  Branches     1672     1672              
==========================================
+ Hits         5368     5369       +1     
+ Misses       2155     2154       -1     
  Partials      152      152              

see 2 files with indirect coverage changes

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