ContentTranslation extension should be converted to use manifest version 2 in its extension.json file.
In extension manifest version 1, documentation was made like this:
"config": { "@ContentTranslationTargetNamespace": "Target namespace to publish articles. Values can be valid namespace ids. Example: 0 for Main, 2 for User namespace", "ContentTranslationTargetNamespace": 0, }
This documentation can now be done with "description" and "value" fields available in manifest_version: 2 like this:
"config": { "ContentTranslationTargetNamespace": { "description": "Target namespace to publish articles. Values can be valid namespace ids. Example: 0 for Main, 2 for User namespace", "value": 0, } },
The maintenance script maintenance/updateExtensionJsonSchema.php semi-automates this conversion and is recommended to be used