provider/gitlab: Improve gitlab documentation (#14827)

* fix gitlab naming

seems like some github stuff was not renamed

* gitlab is using group or user instead of organisations

* add namespace_id to gitlab_project documentation

* it's not possible to manage group members

Author: grafjo

index.html.markdown

@@ -3,14 +3,13 @@ layout: "gitlab"
 page_title: "Provider: GitLab"
 sidebar_current: "docs-gitlab-index"
 description: |-
-  The GitLab provider is used to interact with GitLab organization resources.
+  The GitLab provider is used to interact with GitLab group or user resources.
 ---
 
 # GitLab Provider
 
-The GitLab provider is used to interact with GitLab organization resources.
+The GitLab provider is used to interact with GitLab group or user resources.
 
-The provider allows you to manage your GitLab organization's members and teams easily.
 It needs to be configured with the proper credentials before it can be used.
 
 Use the navigation to the left to read about the available resources.

r/project.html.markdown

@@ -3,13 +3,13 @@ layout: "gitlab"
 page_title: "GitLab: gitlab_project"
 sidebar_current: "docs-gitlab-resource-project-x"
 description: |-
-  Creates and manages projects within Gitlab
+  Creates and manages projects within GitLab groups or within your user
 ---
 
 # gitlab\_project
 
 This resource allows you to create and manage projects within your
-GitLab organization.
+GitLab group or within your user.
 
 
 ## Example Usage
@@ -29,11 +29,11 @@ The following arguments are supported:
 
 * `name` - (Required) The name of the project.
 
-* `description` - (Optional) A description of the project.
-
-* `namespace_id` - (Optional) The namespace to create this project in.
+* `namespace_id` - (Optional) The namespace (group or user) of the project. Defaults to your user.
   See [`gitlab_group`](group.html) for an example.
 
+* `description` - (Optional) A description of the project.
+
 * `default_branch` - (Optional) The default branch for the project.
 
 * `issues_enabled` - (Optional) Enable issue tracking for the project.