Fix lexique warning message

nuxt.config.js

@@ -251,7 +251,9 @@ export default {
               if (!lexique.length) {
                 // eslint-disable-next-line no-console
                 console.warn(
-                  `Term "${term}" in file ${document.path}.${document.extension} doesn't exist`
+                  `Term "${term}" in file ${
+                    document.path + document.extension
+                  } doesn't exist`
                 )
               }
             }