docs: attack_protection - make shields lists consistent

[JohnRoesler]

🔧 Changes

Small documentation consistency change to the attack_protection shields lists

📚 References

🔬 Testing

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[JohnRoesler]

@kushalshit27 please review

[duedares-rvj]

@JohnRoesler Hello 👋
Could you briefly explain what's incorrect in the current example file?

pre_user_registration {
      shields = ["block"]    
    }
    pre_change_password {
      shields = ["block", "admin_notification"]
    }

Also, for docs update:

1. Make your change here:

   terraform-provider-auth0/examples/resources/auth0_attack_protection/resource.tf

   Line 37 in ef9b84d

   shields = ["block", "admin_notification"]

2. Run make docs

This shall do the same thing, but make docs shall help your changes not get reverted.
It also takes care of schema changes, descriptions etc.

Thanks

[JohnRoesler]

@duedares-rvj just listing all the options and in the same order in the docs 👍