Clarify documentation on gitlab_group_share_group resource

The documentation for the `group_id` and `group_share_id` currently
suggests that this resource works the other way round than it actually does.

Author: lauraseidler

docs/resources/group_share_group.md

@@ -30,8 +30,8 @@ resource "gitlab_group_share_group" "test" {
 ### Required
 
 - `group_access` (String) The access level to grant the group. Valid values are: `no one`, `minimal`, `guest`, `reporter`, `developer`, `maintainer`, `owner`, `master`
-- `group_id` (String) The id of the main group.
-- `share_group_id` (Number) The id of an additional group which will be shared with the main group.
+- `group_id` (String) The id of the main group to be shared.
+- `share_group_id` (Number) The id of the additional group with which the main group will be shared.
 
 ### Optional
 

internal/provider/resource_gitlab_group_share_group.go

@@ -28,13 +28,13 @@ var _ = registerResource("gitlab_group_share_group", func() *schema.Resource {
 		},
 		Schema: map[string]*schema.Schema{
 			"group_id": {
-				Description: "The id of the main group.",
+				Description: "The id of the main group to be shared.",
 				Type:        schema.TypeString,
 				ForceNew:    true,
 				Required:    true,
 			},
 			"share_group_id": {
-				Description: "The id of an additional group which will be shared with the main group.",
+				Description: "The id of the additional group with which the main group will be shared.",
 				Type:        schema.TypeInt,
 				ForceNew:    true,
 				Required:    true,