Update ix-server.md

updated version number required for protected audience API

dev-docs/bidders/ix-server.md

@@ -244,8 +244,8 @@ Publishers who want to use the Protected Audience API with Prebid Server, must f
 
 **Before you begin:** Depending on whether you are using the Prebid Server Go or Java code base and the Prebid.js version, you must make sure that you are using the appropriate Prebid Server version:
 
-* **For Prebid Server Go:** If you are using a Prebid.js version that is between 7.44.0 and 8.51.0, you must be using Prebid Server version 2.1.0 or later. For a Prebid.js version that is 8.52.0 or later, you must be using Prebid Server version 3.3.0 or later.
-* **For Prebid Server Java:** If you are using a Prebid.js version that is 7.44.0 or later, you must be using Prebid Server Java version 3.16.0 or later.
+* **For Prebid Server Go:** If you are using a Prebid.js version that is between 8.18.0 and 8.51.0, you must be using Prebid Server version 2.1.0 or later. For a Prebid.js version that is 8.52.0 or later, you must be using Prebid Server version 3.3.0 or later.
+* **For Prebid Server Java:** If you are using a Prebid.js version that is 8.18.0 or later, you must be using Prebid Server Java version 3.16.0 or later.
 
 1. Configure Prebid.js to send the `ae` field with a value of `1`. For more information on how to set up the Protected Audience API in Prebid.js, see the [Protected Audience API support](/dev-docs/bidders/ix.html#protected-audience-api-support) section in our Prebid.js documentation on the Prebid site.
 2. Prebid Server will now automatically pass through the `ae=1` field received from Prebid.js to Index. No other specific Prebid Server configuration is required.