Fixed variable name (#142)

Author: vladvino

api-management/import-api-and-add-to-product/import_an_api_and_add_to_product.ps1

@@ -29,7 +29,7 @@ New-AzureRmResourceGroup -Name $resourceGroupName -Location $location
 New-AzureRmApiManagement -ResourceGroupName $resourceGroupName -Name $apimServiceName -Location $location -Organization $organisation -AdminEmail $adminEmail
 
 # Create the API Management context
-$context = New-AzureRmApiManagementContext -ResourceGroupName $resourceGroupName -ServiceName $serviceName
+$context = New-AzureRmApiManagementContext -ResourceGroupName $resourceGroupName -ServiceName $apimServiceName
 
 # import api from Url
 $api = Import-AzureRmApiManagementApi -Context $context -SpecificationUrl $swaggerUrl -SpecificationFormat Swagger -Path $apiPath