explicitly set the default language (needed for English not being the… (#197)

Co-authored-by: Thorsten Alteholz <thorsten@alteholz.de>

exampleSite/config.yaml

@@ -1,5 +1,6 @@
 baseURL: http://example.org/
 languageCode: en-us
+defaultContentLanguage: en
 title: "Toha"
 theme: "toha"