Pre-Flight String fixes for step 2

[svpernova09]

Description

Fixes issues with translation strings on Page 2 of Preflight. Discord Link

Before:

After:

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• I have read the Contributing documentation available here: https://snipe-it.readme.io/docs/contributing-overview
• I have formatted this PR according to the project guidelines: https://snipe-it.readme.io/docs/contributing-overview#pull-request-guidelines
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[what-the-diff]

PR Summary

• 🌐 Added new translation key/value pair
  Updated general.php file to include a new key/value pair for setup_migration_create_user string.

• 🔄 Updated migrate view template
  Migrate view template now utilizes the new translation instead of the old one.

[snipe]

Awesome, TY Joe! <3