format deprecation notice

Author: bckohan

README.md

@@ -31,9 +31,9 @@ Please refer to the [full documentation](https://django-typer.readthedocs.io/) f
 
 ![django-typer example](https://raw.githubusercontent.com/bckohan/django-typer/main/doc/source/_static/img/closepoll_example.gif)
 
-## Warning
+## 🚨 Deprecation Notice
 
-🚨🚨 **Imports from ``django_typer`` have been deprecated and will be removed in 3.0! Imports have moved to ``django_typer.management``:** 🚨🚨
+**Imports from ``django_typer`` have been deprecated and will be removed in 3.0! Imports have moved to ``django_typer.management``:**
 
 ```python
    # old way