Update upgrading.en.mdx

apps/documentation/docs/fresco/deployment/upgrading.en.mdx

@@ -40,7 +40,7 @@ This version information is accessible from several places:
 
 ## UploadThing Variable Update
 
-If you are upgrading from a version of Fresco prior to XYZ, you will need to update your UploadThing environment variable after the upgrade process is complete. To do this:
+If you are upgrading from a version of Fresco prior to 2.0.0, you will need to update your UploadThing environment variable after the upgrade process is complete. To do this:
 
 1. Visit your UploadThing dashboard.
 2. Navigate to the **API Keys** section from the sidebar and copy your environment variable using the copy button. It should look something like this: