chore: Add a comment to explain why verification codes are needed

Author: annehaley

uvdat/settings/base.py

@@ -119,6 +119,8 @@
 LOGIN_REDIRECT_URL = "/"
 ACCOUNT_LOGOUT_REDIRECT_URL = "/"
 ACCOUNT_SIGNUP_FORM_CLASS = "resonant_utils.allauth.FullNameSignupForm"
+
+# Use codes for email verification; links can be modified by Microsoft Safe Links
 ACCOUNT_EMAIL_VERIFICATION_BY_CODE_ENABLED = True
 
 AUTHENTICATION_BACKENDS.append("guardian.backends.ObjectPermissionBackend")