use full word previous within crosslink

Author: bmuenzenmeyer

packages/i18n/src/locales/en.json

@@ -251,7 +251,7 @@
         "navigateToHome": "Navigate to Home"
       },
       "crossLink": {
-        "previous": "Prev",
+        "previous": "Previous",
         "next": "Next"
       },
       "codebox": {