Destination: Fix missing string format placeholder in log

Change-Id: I45dd4b2b3c828e69baf27e9e14bee4e5a416b3f8
diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/Destination.java b/src/main/java/com/googlesource/gerrit/plugins/replication/Destination.java
index b2821e9..aa03383 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/Destination.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/Destination.java
@@ -339,7 +339,7 @@
                       .check(RefPermission.READ);
                 } catch (AuthException e) {
                   repLog.atFine().log(
-                      "Ref %s on project %s is not visible to calling user",
+                      "Ref %s on project %s is not visible to calling user %s",
                       ref, project, userProvider.get().getUserName().orElse("unknown"));
                   return false;
                 }