Sample Report Missing comma delimiter after langcode

Problem/Motivation

The Sample CSV file output after choosing a Content Type and Import Type is displaying "langcodebody", where it should be "langcode,body"

Steps to reproduce

Click on "Click here to download Sample CSV file", look at the CSV output.

Proposed resolution

Add comma after "langcode" (I suspect its ContentImport.php line 125)

Remaining tasks

User interface changes

API changes

Data model changes