Fixed sanity checks for cloud/scaleway/ modules (#2678)

* fixed validation-modules for plugins/modules/cloud/scaleway/scaleway_image_info.py

* fixed validation-modules for plugins/modules/cloud/scaleway/scaleway_ip_info.py

* fixed validation-modules for plugins/modules/cloud/scaleway/scaleway_security_group_info.py

* fixed validation-modules for plugins/modules/cloud/scaleway/scaleway_server_info.py

* fixed validation-modules for plugins/modules/cloud/scaleway/scaleway_snapshot_info.py

* fixed validation-modules for plugins/modules/cloud/scaleway/scaleway_volume_info.py

* sanity fix

plugins/modules/cloud/scaleway/scaleway_image_info.py

@@ -19,9 +19,7 @@ author:
 extends_documentation_fragment:
 - community.general.scaleway
 
-
 options:
-
   region:
     type: str
     description:
@@ -51,9 +49,12 @@ EXAMPLES = r'''
 RETURN = r'''
 ---
 scaleway_image_info:
-  description: Response from Scaleway API
+  description:
+    - Response from Scaleway API.
+    - "For more details please refer to: U(https://developers.scaleway.com/en/products/instance/api/)."
   returned: success
-  type: complex
+  type: list
+  elements: dict
   sample:
     "scaleway_image_info": [
         {