fix: rename "updates" and "libraries" menu items for clarity (#2004)

Author: diana-villalvazo-wgu

src/header/hooks.test.js

@@ -45,7 +45,7 @@ describe('header utils', () => {
         librariesV2Enabled: true,
       });
       const actualItems = renderHook(() => useContentMenuItems('course-123')).result.current;
-      expect(actualItems[1]).toEqual({ href: '/course/course-123/libraries', title: 'Libraries' });
+      expect(actualItems[1]).toEqual({ href: '/course/course-123/libraries', title: 'Library Updates' });
     });
   });
 

src/header/messages.js

@@ -23,13 +23,13 @@ const messages = defineMessages({
   },
   'header.links.libraries': {
     id: 'header.links.libraries',
-    defaultMessage: 'Libraries',
-    description: 'Link to Linked Libraries page in a course',
+    defaultMessage: 'Library Updates',
+    description: 'Link to Linked Libraries updates page in a course',
   },
   'header.links.updates': {
     id: 'header.links.updates',
-    defaultMessage: 'Updates',
-    description: 'Link to Studio Updates page',
+    defaultMessage: 'Course Updates',
+    description: 'Link to Studio Course Updates page',
   },
   'header.links.pages': {
     id: 'header.links.pages',