SuperManifestRefUpdateListener: add whitespace for styling

Automated fix by java formatter

Change-Id: Iebd4e4dd4e8ad33ebd0dbe3ffde6abf225f647e5
diff --git a/java/com/googlesource/gerrit/plugins/supermanifest/SuperManifestRefUpdatedListener.java b/java/com/googlesource/gerrit/plugins/supermanifest/SuperManifestRefUpdatedListener.java
index 9b14151..bfaca2e 100644
--- a/java/com/googlesource/gerrit/plugins/supermanifest/SuperManifestRefUpdatedListener.java
+++ b/java/com/googlesource/gerrit/plugins/supermanifest/SuperManifestRefUpdatedListener.java
@@ -300,7 +300,7 @@
       }
       return;
     }
-    if(RefNames.isNoteDbMetaRef(event.getRefName())) {
+    if (RefNames.isNoteDbMetaRef(event.getRefName())) {
       // NoteDb meta ref updates never cause supermanifest updates.
       return;
     }