Fix #766 Documented workspace_access for group

docs/resources/group.md

@@ -50,6 +50,7 @@ The following arguments are supported:
 * `allow_cluster_create` -  (Optional) This is a field to allow the group to have [cluster](cluster.md) create privileges. More fine grained permissions could be assigned with [databricks_permissions](permissions.md#Cluster-usage) and [cluster_id](permissions.md#cluster_id) argument. Everyone without `allow_cluster_create` argument set, but with [permission to use](permissions.md#Cluster-Policy-usage) Cluster Policy would be able to create clusters, but within boundaries of that specific policy.
 * `allow_instance_pool_create` -  (Optional) This is a field to allow the group to have [instance pool](instance_pool.md) create privileges. More fine grained permissions could be assigned with [databricks_permissions](permissions.md#Instance-Pool-usage) and [instance_pool_id](permissions.md#instance_pool_id) argument.
 * `allow_sql_analytics_access` - (Optional) This is a field to allow the group to have access to [Databricks SQL](https://databricks.com/product/databricks-sql) feature through [databricks_sql_endpoint](sql_endpoint.md).
+* `workspace_access` - (Optional) This is a field to allow the group to have access to Databricks Workspace.
 
 ## Attribute Reference