Validation Bug

### Description of issue
In name field it takes number and in password field it takes space.

### Expected result
Name field only take letter and not number

### Actual result

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

```
Path: /pages/signup.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--thamizhan-unavagam.netlify.app%2Fpages%2Fsignup.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--thamizhan-unavagam.netlify.app/pages/signup.html)

Start with /pages/signup.html and reproduce the signup validation in Chrome on the provided deploy preview. Inspect the name and password fields; done means numbers are rejected in the name field and spaces are rejected in the password field.

Written by the indexing model from the issue text.