Update interfaces.md - Changed one of the examples to be self consistent. It was contradicting itself.

[DamonGuzman]

Edited the Interface documentation so the interface fields are correct.

Description

On the interface documentation the Strawberry example had "fix" as a field while the GraphQL Schema example had "minLength" as a field, without "fix". Considering that the Type is "PasswordTooShort" I thought it made sense to keep the "minLength" field.

Types of Changes

• [ ] Core
• [ ] Bugfix
• [ ] New feature
• [ ] Enhancement/optimization
• [x] Documentation

Issues Fixed or Closed by This PR

Checklist

• [ ] My code follows the code style of this project.
• [x] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [ ] I have tested the changes and verified that they work and don't break anything (as well as I can manage).

I apologize, but I am new to Open Source contributions (all of my projects are private repos), so I didn't make a RELEASE.md. I do not know the requirements, implications, or expectations around doing so.