[ReleasePR app] Change description (#2273)

Create to sync Azure/azure-rest-api-specs#18455
[ReCreate this PR](https://github.com/azure-resource-manager-schemas/compare/main...AzureSDKAutomation:sdkAuto/app?expand=1)

schemas/2022-03-01/Microsoft.App.json

@@ -912,7 +912,7 @@
               "$ref": "https://schema.management.azure.com/schemas/common/definitions.json#/definitions/expression"
             }
           ],
-          "description": "ActiveRevisionsMode controls how active revisions are handled for the Container app:\n<list><item>Multiple: multiple revisions can be active. If no value if provided, this is the default</item><item>Single: Only one revision can be active at a time. Revision weights can not be used in this mode</item></list>."
+          "description": "ActiveRevisionsMode controls how active revisions are handled for the Container app:\n<list><item>Multiple: multiple revisions can be active.</item><item>Single: Only one revision can be active at a time. Revision weights can not be used in this mode. If no value if provided, this is the default.</item></list>."
         },
         "dapr": {
           "oneOf": [