fix(tfcserver): Fix ip flag in _default.cfg

[jonahwh]

Description

Please include a summary of the change and which issues are fixed.

Fixes #3858

Fixes TFC default config's "ip" param being set improperly

Type of change

• Bug fix (a change which fixes an issue).

Checklist

PR will not be merged until all steps are complete.

• This pull request links to an issue.
• This pull request uses the develop branch as its base.
• This pull request Subject follows the Conventional Commits standard.
• This code follows the style guidelines of this project.
• I have performed a self-review of my code.
• I have checked that this code is commented where required.
• I have provided a detailed with enough description of this PR.
• I have checked If documentation needs updating.

[github-actions]

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