enhancement: updates signup copy

[theClarkSell]

Updates signup copy to be a bit more clear as to each step in the process.

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Name	Status	Preview	Comments	Updated (UTC)
thatconference-com	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 4, 2024 1:30pm

[theClarkSell]

Current dependencies on/for this PR:

• main
  • PR #199 👈

This stack of pull requests is managed by Graphite.