Issue #2531622 by colbol: The description for the responsive image module...

Issue #2531622 by colbol: The description for the responsive image module admin link should end with a period.

core/modules/responsive_image/responsive_image.links.menu.yml

 entity.responsive_image_style.collection:
   title: 'Responsive image styles'
-  description: 'Manage responsive image styles'
+  description: 'Manage responsive image styles.'
   weight: 10
   route_name: entity.responsive_image_style.collection
   parent: system.admin_config_media