Fix not-attempted replication status parsing

Change-Id: I3b83ea769b8564692e4eefc0b804d0a84e810609
diff --git a/src/main/java/com/googlesource/gerrit/plugins/replicationstatus/ReplicationStatus.java b/src/main/java/com/googlesource/gerrit/plugins/replicationstatus/ReplicationStatus.java
index b7cda48..31253e9 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replicationstatus/ReplicationStatus.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replicationstatus/ReplicationStatus.java
@@ -111,7 +111,7 @@
       switch (result.toLowerCase()) {
         case "succeeded":
           return SUCCEEDED;
-        case "not_attempted":
+        case "not-attempted":
           return NOT_ATTEMPTED;
         case "scheduled":
           return SCHEDULED;