fix nits

docs/internationalization.md

@@ -61,6 +61,8 @@ So the workflow is as follows:
 6. Enjoy translated app!
 
 ### Common pitfalls
+These pitfalls are memoization pitfalls that will cause the components to not re-render when the locale is changed -- causing for stale translations to be shown.
+
 ```jsx
 import { msg } from "@lingui/macro";
 import { i18n } from "@lingui/core";