Adjust whitespace to satisfy black linter

src/admiral/model/__init__.py

@@ -1,4 +1,5 @@
 """Database models."""
+
 from .cert import Cert
 from .domain import Agency, Domain
 

src/admiral/model/cert.py

@@ -1,4 +1,5 @@
 """Mongo document models for Certificate documents."""
+
 # Standard Python Libraries
 from datetime import datetime
 

src/admiral/model/domain.py

@@ -1,4 +1,5 @@
 """Mongo document models for Domains."""
+
 # Third-Party Libraries
 from mongoengine import Document, EmbeddedDocument
 from mongoengine.fields import (

src/admiral/util/__init__.py

@@ -1,4 +1,5 @@
 """Utility functions."""
+
 from .config import connect_from_config, load_config
 from .domains import trim_domains