doc(README): adjusts connection parameter table formatting

Author: Brooke-white

README.rst

@@ -319,7 +319,7 @@ 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                         | list | A list of existing database group names that the DbUser joins for the current session                                                                                                                                                                                                                                                                                                                     | None                 | No       |
+| db_groups                         | list | A comma-separated 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       |
 +-----------------------------------+------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------+
@@ -333,7 +333,6 @@ Connection Parameters
 +-----------------------------------+------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------+
 | iam_disable_cache                 | bool | This option specifies whether the IAM credentials are cached. By default the IAM credentials are cached. This improves performance when requests to the API gateway are throttled.                                                                                                                                                                                                                        | FALSE                | No       |
 +-----------------------------------+------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------+
-+-----------------------------------+------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------+
 | identity_namespace                | str  | The identity namespace to be used for the IdC browser auth plugin and IdP token auth plugin. It is an optional value if there is only one IdC instance existing or if default identity namespace is set on the cluster - else it is required.                                                                                                                                                             | None                 | No       |
 +-----------------------------------+------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------+
 | idp_response_timeout              | int  | The timeout for retrieving SAML assertion from IdP                                                                                                                                                                                                                                                                                                                                                        | 120                  | No       |