Update marketplace-images.md

Changing some phrasing (Acrolinx)

Author: mattmcinnes

articles/virtual-machines/marketplace-images.md

@@ -17,7 +17,7 @@ ms.custom: devx-track-azurepowershell
 
 **Applies to:** :heavy_check_mark: Linux VMs :heavy_check_mark: Windows VMs :heavy_check_mark: Flexible scale sets :heavy_check_mark: Uniform scale sets
 
-If you are creating an image in a shared gallery while using a source that was originally created from an Azure Marketplace image, you may need to keep track of purchase plan information. This article shows how to find purchase plan information for a VM and use that information when creating an image definition. We also cover using the information from the image definition to simplify supplying the purchase plan information when creating a VM for an image.
+If you're creating an image in a shared gallery using an Azure Marketplace image source, you'll likely need to track purchase plan information. This article shows you how to find purchase plan information for a VM when creating an image definition. We also cover using this information to simplify supplying the purchase plan information when creating a VM for an image.
 
 For more information about finding and using Marketplace images, see [Find and use Azure Marketplace images](./windows/cli-ps-findimage.md).
 
@@ -40,7 +40,7 @@ Get the gallery you want to use to store the image. You can list all of the gall
 Get-AzResource -ResourceType Microsoft.Compute/galleries | Format-Table
 ```
 
-Then create variables for the gallery you want to use. In this example, we are creating a variable named `$gallery` for *myGallery* in the *myGalleryRG* resource group.
+Then create variables for the gallery you want to use. In this example, we're creating a variable named `$gallery` for *myGallery* in the *myGalleryRG* resource group.
 
 ```azurepowershell-interactive
 $gallery = Get-AzGallery `