feat: Add Unraid OS 7.3.2 release notes (#513)

Draft release notes for Unraid OS 7.3.2, pushed from Linear via
notification-worker. Review and edit before publishing.

Author: unraid-bot

docs/unraid-os/release-notes/7.3.2.md

@@ -6,11 +6,12 @@ Recommended for all users.
 
 ## Upgrading
 
-For step-by-step instructions, see [Updating Unraid](<https:///unraid-os/updating-unraid/>). Questions about your [license](<../../unraid-os/troubleshooting/licensing-faq.mdx#license-types--features>)?
+For step-by-step instructions, see [Updating Unraid](<https://unraid-os/updating-unraid/>). Questions about your [license](<https://../../unraid-os/troubleshooting/licensing-faq.mdx#license-types--features>)?
 
 ## Known issues
 
 * No new release-specific known issues are noted. For issues inherited from prior releases, see the [Unraid OS 7.3.1](<../7.3.1/>) release notes.
+* For users with Intel Arc A series cards black screens can be found when booting a VM with the card passed through, current investigations show that Q35 models are the potential cause. Recommend VMs are changed to i440fx. You will need to remove the template and recreate as this cannot be changes in the UI. [https://forums.unraid.net/topic/198866-linux-vm-with-gpu-passthrough-broke-after-upgrading-to-73/page/2/#findComment-1630857](<https://forums.unraid.net/topic/198866-linux-vm-with-gpu-passthrough-broke-after-upgrading-to-73/page/2/#findComment-1630857>) Investigations will continue until a fix is found.
 
 ## Notes