- add som descriptions

utils/db/db.py

@@ -8,7 +8,7 @@ class DbConnector:
     Must create instance of singleton and then must be initialized using method init.
     Right place for init db is for example in main before uvicorn.run
 
-    :raises SQLAlchemyError, IntegrityError, OperationalError, ...
+    :raises: SQLAlchemyError, IntegrityError, OperationalError, ...
     """
     _instances = {}