refactor: update legacy libraries warning text

Author: navinkarkera

src/studio-home/tabs-section/messages.ts

@@ -69,7 +69,7 @@ const messages = defineMessages({
   },
   alertDescriptionV1: {
     id: 'studio-home.libraries.migrate-alert.description-v1',
-    defaultMessage: 'In a future release, legacy libraries will no longer be supported.'
+    defaultMessage: 'In the Willow release, legacy libraries will no longer be supported.'
       + ' The new libraries experience allows you to author sections, subsections, units,'
       + ' and components to reuse across your courses. Content from legacy libraries can be'
       + ' migrated to the new experience.',