Rephrased the parameter description

src/azure-cli/azure/cli/command_modules/appservice/_params.py

@@ -287,9 +287,9 @@ subscription than the app service environment, please use the resource ID for --
             c.argument('scope', help="The scope the managed identity has access to")
             c.argument('role', help="Role name or id the managed identity will be assigned")
         with self.argument_context(scope + ' identity assign') as c:
-            c.argument('assign_identities', options_list=['--identities'], nargs='*', help="Space-separated identities to assign. For User Assigned Identities, pass ids in the form: '/subscriptions/subscriptionId/resourceGroups/resourceGroupName/providers/Microsoft.ManagedIdentity/userAssignedIdentities/identityName'. Use '{0}' to refer to the system assigned identity. For User Assigned Identities, pass ids in the form: '/subscriptions/subscriptionId/resourceGroups/resourceGroupName/providers/Microsoft.ManagedIdentity/userAssignedIdentities/identityName'. Default: '{0}'".format(MSI_LOCAL_ID))
+            c.argument('assign_identities', options_list=['--identities'], nargs='*', help="Space-separated identities to assign. For User Assigned Identities, pass ids as full qualified resource ids like '/subscriptions/subscriptionId/resourceGroups/resourceGroupName/providers/Microsoft.ManagedIdentity/userAssignedIdentities/identityName'. Use '{0}' to refer to the system assigned identity. For User Assigned Identities, pass ids as full qualified resource ids like '/subscriptions/subscriptionId/resourceGroups/resourceGroupName/providers/Microsoft.ManagedIdentity/userAssignedIdentities/identityName'. Default: '{0}'".format(MSI_LOCAL_ID))
         with self.argument_context(scope + ' identity remove') as c:
-            c.argument('remove_identities', options_list=['--identities'], nargs='*', help="Space-separated identities to assign. For User Assigned Identities, pass ids in the form: '/subscriptions/subscriptionId/resourceGroups/resourceGroupName/providers/Microsoft.ManagedIdentity/userAssignedIdentities/identityName'. Use '{0}' to refer to the system assigned identity. For User Assigned Identities, pass ids in the form: '/subscriptions/subscriptionId/resourceGroups/resourceGroupName/providers/Microsoft.ManagedIdentity/userAssignedIdentities/identityName'. Default: '{0}'".format(MSI_LOCAL_ID))
+            c.argument('remove_identities', options_list=['--identities'], nargs='*', help="Space-separated identities to assign. For User Assigned Identities, pass ids as full qualified resource ids like '/subscriptions/subscriptionId/resourceGroups/resourceGroupName/providers/Microsoft.ManagedIdentity/userAssignedIdentities/identityName'. Use '{0}' to refer to the system assigned identity. For User Assigned Identities, pass ids as full qualified resource ids like '/subscriptions/subscriptionId/resourceGroups/resourceGroupName/providers/Microsoft.ManagedIdentity/userAssignedIdentities/identityName'. Default: '{0}'".format(MSI_LOCAL_ID))
 
         with self.argument_context(scope + ' deployment source config-zip') as c:
             c.argument('src', help='a zip file path for deployment')
@@ -1100,9 +1100,9 @@ subscription than the app service environment, please use the resource ID for --
         c.argument('scope', help="The scope the managed identity has access to")
         c.argument('role', help="Role name or id the managed identity will be assigned")
     with self.argument_context('staticwebapp identity assign') as c:
-        c.argument('assign_identities', options_list=['--identities'], nargs='*', help="Space-separated identities to assign. For User Assigned Identities, pass ids in the form: '/subscriptions/subscriptionId/resourceGroups/resourceGroupName/providers/Microsoft.ManagedIdentity/userAssignedIdentities/identityName'. Use '{0}' to refer to the system assigned identity. Default: '{0}'".format(MSI_LOCAL_ID))
+        c.argument('assign_identities', options_list=['--identities'], nargs='*', help="Space-separated identities to assign. For User Assigned Identities, pass ids as full qualified resource ids like '/subscriptions/subscriptionId/resourceGroups/resourceGroupName/providers/Microsoft.ManagedIdentity/userAssignedIdentities/identityName'. Use '{0}' to refer to the system assigned identity. Default: '{0}'".format(MSI_LOCAL_ID))
     with self.argument_context('staticwebapp identity remove') as c:
-        c.argument('remove_identities', options_list=['--identities'], nargs='*', help="Space-separated identities to assign. For User Assigned Identities, pass ids in the form: '/subscriptions/subscriptionId/resourceGroups/resourceGroupName/providers/Microsoft.ManagedIdentity/userAssignedIdentities/identityName'. Use '{0}' to refer to the system assigned identity. Default: '{0}'".format(MSI_LOCAL_ID))
+        c.argument('remove_identities', options_list=['--identities'], nargs='*', help="Space-separated identities to assign. For User Assigned Identities, pass ids as full qualified resource ids like '/subscriptions/subscriptionId/resourceGroups/resourceGroupName/providers/Microsoft.ManagedIdentity/userAssignedIdentities/identityName'. Use '{0}' to refer to the system assigned identity. Default: '{0}'".format(MSI_LOCAL_ID))
     with self.argument_context('staticwebapp create') as c:
         c.argument('location', arg_type=get_location_type(self.cli_ctx))
         c.argument('tags', arg_type=tags_type)