Login fixes

[jakazzy]

Task Description

Currently we have an amazing login page! yipee It is great!
however, these are few additions to enhance what we already have

• The placeholder text for the email is missing a character
  Visit the url below
  https://tbf-teamwork.vercel.app/login

• The login image takes a while to load on the page.
• when a user is logged in, each time they visit the login page, they should be redirected to the dashboard page.
• As part of these changes, we could likely add test to login page using React testing library(or perhaps have another issue for this. Kindly comment on the issue if that's a consideration).

Technical Considerations

Kindly view the docs for React testing library