Update README.md (#75)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: jackton1

README.md

@@ -18,6 +18,7 @@ Resolve django makemigrations `multiple leaf nodes in the migration graph` by en
 $ pip install django-migration-fixer
 ```
 
+
 #### Add `migration_fixer` to your INSTALLED_APPS
 
 ```python