fix readme engine database sqlite3
diff --git a/README.rst b/README.rst
index 0dcb4c0..5d2900f 100644
--- a/README.rst
+++ b/README.rst
@@ -28,7 +28,7 @@
           user: admin
           password: passwd
         database:
-          engine: sqlite
+          engine: sqlite3
 
 Server installed with PostgreSQL database