SiteMatrix 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": { "@SiteMatrixPrivateSites": "dbname list of private wikis.", "SiteMatrixPrivateSites": null, "@SiteMatrixFishbowlSites": "dbname list of fishbowl wikis.", "SiteMatrixFishbowlSites": null, }
This documentation can now be done with "description" and "value" fields available in manifest_version: 2 like this:
"config": { "SiteMatrixPrivateSites": { "description": "dbname list of private wikis.", "value": null, } "SiteMatrixFishbowlSites": { "description": "dbname list of fishbowl wikis.", "value": null, } },
The maintenance script maintenance/updateExtensionJsonSchema.php semi-automates this conversion and is recommended to be used