update comments and docs

builder/openstack/step_update_image_mindisk.go

@@ -26,7 +26,7 @@ func (s *stepUpdateImageMinDisk) Run(_ context.Context, state multistep.StateBag
 		return multistep.ActionHalt
 	}
 
-	ui.Say(fmt.Sprintf("Updatind image min disk to %d", config.ImageMinDisk))
+	ui.Say(fmt.Sprintf("Updating image min disk to %d", config.ImageMinDisk))
 
 	r := images.Update(
 		imageClient,

website/source/docs/builders/openstack.html.md

@@ -144,7 +144,7 @@ builder.
     after creation. An image member is usually a project (also called the
     "tenant") with whom the image is shared.
 
--   `image_min_disk` (int) - Minimum disk of needed to boot image size in GB. 
+-   `image_min_disk` (int) - Minimum disk size needed to boot image, in gigabytes.
 
 -   `image_tags` (array of strings) - List of tags to add to the image after
     creation.