Change wording on final page to "traits.json" instead of "metadata.json"

[sk33z3r]

Currently the final page calls the Collection Wizard output "metadata", but this is misleading. We should clearly separate the terms.

Output names:

• For the Collection Wizard: "Traits Data" saves to file traits.json
• For the Minting Config: Minting Config saves to file config.json

[sk33z3r]

React UI Updates needed for Local Release

[you3h]

Applied a fix to this issue under PR #11

[sk33z3r]

Looks good