docs: db_groups parameter takes a list, not str (#99)

Author: hoxu

README.rst

@@ -292,7 +292,7 @@ Connection Parameters
 +-----------------------------------+------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------+
 | database_metadata_current_db_only | bool | Indicates if application supports multi-database datashare catalogs. Default value of  True indicates application does not support multi-database datashare catalogs for backwards compatibility                                                                                                                                                                                                          | TRUE                 | No       |
 +-----------------------------------+------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------+
-| db_groups                         | str  | A comma-separated list of existing database group names that the DbUser joins for the current session                                                                                                                                                                                                                                                                                                     | None                 | No       |
+| db_groups                         | list | A list of existing database group names that the DbUser joins for the current session                                                                                                                                                                                                                                                                                                                     | None                 | No       |
 +-----------------------------------+------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------+
 | db_user                           | str  | The user ID to use with Amazon Redshift                                                                                                                                                                                                                                                                                                                                                                   | None                 | No       |
 +-----------------------------------+------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------+

redshift_connector/__init__.py

@@ -246,8 +246,8 @@ def connect(
         The SSO url for the IdP.
     auto_create : Optional[bool]
         Indicates whether the user should be created if they do not exist. Default value is `False`.
-    db_groups : Optional[str]
-        A comma-separated list of existing database group names that the `db_user` joins for the current session.
+    db_groups : Optional[List[str]]
+        A list of existing database group names that the `db_user` joins for the current session.
     force_lowercase : Optional[bool]
     allow_db_user_override : Optional[bool]
         Specifies if the driver uses the `db_user` value from the SAML assertion. TDefault value is `False`.