Update format of invitation email

[erictncabramson]

User Story As a new user, I want to be be able to quickly and easily sign into my Animl account, so I can start using the software!

Acceptance Criteria

• Change format of the email so that instead of displaying all as one paragraph it displays as:

"Welcome to Animl! Your log-in information is below:

• username: [insert username here]
• temporary password: [insert temporary password here]

The password will expire within 7 days, so please sign in and update it as soon as possible at https://animl.camera/app"

Notes Current format for reference