Document the 0.16.1 fix for host-mounted sockets

Signed-off-by: Stephen Kitt <[email protected]>

src/content/community/releases/_index.en.md

@@ -12,6 +12,9 @@ weight = 40
 * The Gateway leader election was enhanced to not restart the pod when leadership is lost to avoid possible data path disruption.
 * Fixed an issue in Service Discovery where stale endpoint IPs, corresponding to services that no longer exist, were returned from DNS
   queries.
+* Sockets from the host are mounted through their parent directory, which ensures that the sockets themselves aren't replaced by directories
+  (which prevents OVN components from starting). Additionally, stray directories are cleaned up at startup. This fixes the known issue with
+  upgrades involving OVN, [documented in the known issues in v0.16.0](#v0160).
 
 ## v0.16.0