docs/config.md: fix DatabaseURL usage

diff --git a/docs/config.md b/docs/config.md
index b8df609fcbeee9630babb3a11cc1e274b4ee3059..74259c5b005a698d47e31782fe373078048c0503 100644 (file)
--- a/docs/config.md
+++ b/docs/config.md
@@ -7,15 +7,17 @@ that is not committed to source control.
 **app.py**:
 
 ```python
+import databases
+
 from starlette.applications import Starlette
 from starlette.config import Config
-from starlette.datastructures import CommaSeparatedStrings, DatabaseURL, Secret
+from starlette.datastructures import CommaSeparatedStrings, Secret
 
 # Config will be read from environment variables and/or ".env" files.
 config = Config(".env")
 
 DEBUG = config('DEBUG', cast=bool, default=False)
-DATABASE_URL = config('DATABASE_URL', cast=DatabaseURL)
+DATABASE_URL = config('DATABASE_URL', cast=databases.DatabaseURL)
 SECRET_KEY = config('SECRET_KEY', cast=Secret)
 ALLOWED_HOSTS = config('ALLOWED_HOSTS', cast=CommaSeparatedStrings)