Link to #4376 in 3.10.0 release notes

(cherry picked from commit db6bdb4)

Author: michaelklishin

release-notes/3.10.0.md

@@ -214,6 +214,17 @@ This release includes all applicable [bug fixes that shipped in `3.9.x` releases
 
    GitHub issue: [#3341](https://github.com/rabbitmq/rabbitmq-server/pull/3341)
 
+
+### Prometheus Plugin
+
+#### Bug Fixes
+
+ * Prometheus collector could run into an exception early on node's
+   schema database sync.
+
+   GitHub issue: [#4376](https://github.com/rabbitmq/rabbitmq-server/pull/4376)
+
+
 ### Management Plugin
 
 #### Enhancements
@@ -265,7 +276,6 @@ This release includes all applicable [bug fixes that shipped in `3.9.x` releases
    GitHub issue: [#4098](https://github.com/rabbitmq/rabbitmq-server/pull/4098)
 
 
-
 ### Consul Peer Discovery Plugin
 
 #### Bug Fixes