Remove migrate_source_csv from upgrade guide

https://www.drupal.org/docs/8/upgrade includes a link to https://www.drupal.org/docs/8/modules/migrate-source-csv/using-the-migra…, which does not belong as part of the Drupal 8 upgrade path. This page belongs under https://www.drupal.org/docs/8/modules/migrate-source-csv – and, it indeed is there. Editing the page shows it belong to guide Migrate Source CSV (2866173), which is correct. I’m at a loss how to remove it from the upgrade page.


Source: https://www.drupal.org/project/issues/rss/documentation