Update LANGUAGE_CODE in Wagtail before internationalization?
I've developed a site in Wagtail, but missed to update the LANGUAGE_CODE before the first (and several other) migrations. In the Internationalization instructions the following is noted:
"If you have changed the LANGUAGE_CODE setting since updating to Wagtail 2.11, you will need to manually update the record in the Locale model too before enabling internationalization, as your existing content will be assigned to the old code."
But, how do I manually update the the record in the Locale model?