Issue #3450760 by SandeepMahlawat, benjifisher, smustgrave: Add missing...

Issue #3450760 by SandeepMahlawat, benjifisher, smustgrave: Add missing 'label' key to navigation.layouts.yml

core/modules/navigation/navigation.layouts.yml

 navigation_layout:
+  label: 'Navigation layout'
   path: layouts
   template: navigation
   library: navigation/navigation.layout
-  category: 'Navigation layout'
+  category: 'Navigation'
   class: \Drupal\navigation\NavigationLayout
   default_region: first
   icon_map: