do not give the required for social media links

### Description of issue
social media links are not required for a doctor

### Expected result

### Actual result

### Steps to reproduce
1.
2.
3.

```
Path: /admin/admin_doctor_form.html
Browser: Chrome 112.0.0.0 on Windows 10
Viewport: 1504 x 860 @1.5x
Language: en-GB
Cookies: Enabled
```

[Open in BrowserStack](https://www.browserstack.com/user/try-live?url=https%3A%2F%2Fdeploy-preview-1--medicalservice.netlify.app%2Fadmin%2Fadmin_doctor_form.html&os=Windows&os_version=10&browser=Chrome&browser_version=112.0&resolution=1504x860&speed=1&start=true&ref=netlify-source)

Submitted from [Netlify Deploy Preview #1](https://deploy-preview-1--medicalservice.netlify.app/admin/admin_doctor_form.html)

Start with admin/admin_doctor_form.html and reproduce the doctor form in the supplied Chrome setup with social media links blank. Inspect how required fields are represented, then verify that a doctor can be submitted without social media links while other required information remains validated.

Written by the indexing model from the issue text.