[CODEOWNERS] fix the codeowners file for appex sharedux team (#223433)

## Summary

Resolve a typo in CODEOWNERS

Author: tsullivan

.github/CODEOWNERS

@@ -1913,8 +1913,8 @@ src/platform/plugins/shared/discover/public/context_awareness/profile_providers/
 /src/platform/test/node_roles_functional @elastic/kibana-core
 /src/platform/test/functional/page_objects/newsfeed_page.ts @elastic/kibana-core # assigned per https://github.com/elastic/kibana/pull/160210
 /src/platform/test/functional/page_objects/home_page.ts @elastic/appex-sharedux
-/src/platform/test/functional/page_objects/export_page.ts @elastic/kibana-sharedux
-/src/platform/test/functional/page_objects/solution_navigation.ts @elastic/kibana-sharedux
+/src/platform/test/functional/page_objects/export_page.ts @elastic/appex-sharedux
+/src/platform/test/functional/page_objects/solution_navigation.ts @elastic/appex-sharedux
 /src/platform/test/functional/fixtures/es_archiver/deprecations_service @elastic/kibana-core
 /src/platform/test/health_gateway @elastic/kibana-core
 /src/platform/test/api_integration/apis/saved_objects* @elastic/kibana-core