docs(url): fix incorrect url param in the doc (#3667)

platform/docs/docs/configuration/url.md

@@ -59,9 +59,11 @@ If you happen to have multiple data sources configured, you can filter the
 WorkList by adding the `dataSources` query parameter.
 
 ```js
-/?dataSourcename=orthanc
+/?dataSources=orthanc
 ```
 
+Note: you should pass the `sourceName` of the data source in the configuration file (not the friendly name nor the name)
+
 :::tip
 
 You can add `sortBy` and `sortDirection` query parameters to sort the WorkList