Fix default site name

[engineervix]

Description of Changes Made

This is a small fix to change the default site name in Social Media Settings

MR Checklist

• Add a description of your pull request and instructions for the reviewer to verify your work.
• If your pull request is for a specific ticket, link to it in the description. No ticket
• Stay on point and keep it small so the merge request can be easily reviewed.
• Consider adding unit tests, especially for bug fixes. If you don't, tell us why. This just changes the default value of a Model field. No tests required.
• Tests and linting passes.
• Consider updating documentation. If you don't, tell us why. No docs required
• If relevant, list the environments / browsers in which you tested your changes. Browser testing not required