Add missing @Assisted when creating the metrics

The @Assisted was missed in the creation of the
PullReplicationApiRequestMetrics during the merge up of stable-3.2
to stable-3.3 and stable-3.4.

Change-Id: I54dad14f0b10c5a47b77aa04dd29db094709a1a3
diff --git a/src/main/java/com/googlesource/gerrit/plugins/replication/pull/api/FetchJob.java b/src/main/java/com/googlesource/gerrit/plugins/replication/pull/api/FetchJob.java
index 9478d5c..e15dd68 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/replication/pull/api/FetchJob.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/replication/pull/api/FetchJob.java
@@ -40,7 +40,7 @@
       FetchCommand command,
       @Assisted Project.NameKey project,
       @Assisted FetchAction.Input input,
-      PullReplicationApiRequestMetrics metrics) {
+      @Assisted PullReplicationApiRequestMetrics metrics) {
     this.command = command;
     this.project = project;
     this.input = input;