replace url by siteUrl

Author: a1mery

docs/general-development/site-collection-app-catalog.md

@@ -87,7 +87,7 @@ Add-PnPSiteCollectionAppCatalog -site https://contoso.sharepoint.com/sites/marke
 Alternatively, use the `spo site appcatalog add` command if you are using the CLI for Microsoft 365:
 
 ```console
-m365 spo site appcatalog add --url https://contoso.sharepoint.com/sites/marketing
+m365 spo site appcatalog add --siteUrl https://contoso.sharepoint.com/sites/marketing
 ```
 
 After executing this script, the **Apps for SharePoint** library will be added to your site collection where you will be able to deploy SharePoint add-ins and SharePoint Framework solutions.