Organize project tag api-ref by route

This change moves the various api ref entries for project
tags to be consistent with other api-ref entries, organized
by route.

Change-Id: I6ccd9a2878224cfb7357e8ad1ae1aca77de368ef

api-ref/source/v3/project-tags.inc

@@ -73,6 +73,100 @@ Example
    :language: javascript
 
 
+Modify tag list for a project
+=============================
+
+.. rest_method:: PUT /v3/projects/{project_id}/tags
+
+Modifies the tags for a project. Any existing tags not specified will
+be deleted.
+
+Relationship: ``https://docs.openstack.org/api/openstack-identity/3/rel/projects``
+
+Request
+-------
+
+Parameters
+~~~~~~~~~~
+
+.. rest_parameters:: parameters.yaml
+
+   - project_id: project_id_path
+   - tags: response_body_project_tags_required
+
+Example
+~~~~~~~
+
+.. literalinclude:: ./samples/admin/project-tags-update-request.json
+   :language: javascript
+
+Response
+--------
+
+Parameters
+~~~~~~~~~~
+
+.. rest_parameters:: parameters.yaml
+
+   - tags: response_body_project_tags_required
+
+Status Codes
+~~~~~~~~~~~~
+
+.. rest_status_code:: success status.yaml
+
+   - 200
+
+.. rest_status_code:: error status.yaml
+
+   - 400
+   - 401
+   - 403
+   - 404
+
+Example
+~~~~~~~
+
+.. literalinclude:: ./samples/admin/project-tags-update-response.json
+   :language: javascript
+
+
+Remove all tags from a project
+==============================
+
+.. rest_method:: DELETE /v3/projects/{project_id}/tags
+
+Remove all tags from a given project.
+
+Relationship: ``https://docs.openstack.org/api/openstack-identity/3/rel/projects``
+
+Request
+-------
+
+Parameters
+~~~~~~~~~~
+
+.. rest_parameters:: parameters.yaml
+
+   - project_id: project_id_path
+
+Response
+--------
+
+Status Codes
+~~~~~~~~~~~~
+
+.. rest_status_code:: success status.yaml
+
+   - 204
+
+.. rest_status_code:: error status.yaml
+
+   - 400
+   - 401
+   - 403
+
+
 Check if project contains tag
 =============================
 
@@ -152,64 +246,6 @@ Status Codes
    - 404
 
 
-Modify tag list for a project
-=============================
-
-.. rest_method:: PUT /v3/projects/{project_id}/tags
-
-Modifies the tags for a project. Any existing tags not specified will
-be deleted.
-
-Relationship: ``https://docs.openstack.org/api/openstack-identity/3/rel/projects``
-
-Request
--------
-
-Parameters
-~~~~~~~~~~
-
-.. rest_parameters:: parameters.yaml
-
-   - project_id: project_id_path
-   - tags: response_body_project_tags_required
-
-Example
-~~~~~~~
-
-.. literalinclude:: ./samples/admin/project-tags-update-request.json
-   :language: javascript
-
-Response
---------
-
-Parameters
-~~~~~~~~~~
-
-.. rest_parameters:: parameters.yaml
-
-   - tags: response_body_project_tags_required
-
-Status Codes
-~~~~~~~~~~~~
-
-.. rest_status_code:: success status.yaml
-
-   - 200
-
-.. rest_status_code:: error status.yaml
-
-   - 400
-   - 401
-   - 403
-   - 404
-
-Example
-~~~~~~~
-
-.. literalinclude:: ./samples/admin/project-tags-update-response.json
-   :language: javascript
-
-
 Delete single tag from project
 ==============================
 
@@ -248,43 +284,6 @@ Status Codes
    - 404
 
 
-Remove all tags from a project
-==============================
-
-.. rest_method:: DELETE /v3/projects/{project_id}/tags
-
-Remove all tags from a given project.
-
-Relationship: ``https://docs.openstack.org/api/openstack-identity/3/rel/projects``
-
-Request
--------
-
-Parameters
-~~~~~~~~~~
-
-.. rest_parameters:: parameters.yaml
-
-   - project_id: project_id_path
-
-Response
---------
-
-Status Codes
-~~~~~~~~~~~~
-
-.. rest_status_code:: success status.yaml
-
-   - 204
-
-.. rest_status_code:: error status.yaml
-
-   - 400
-   - 401
-   - 403
-   - 404
-
-
 ===============================
 Filtering and searching by tags
 ===============================