MetaDataUpdate: Fix example code

Change-Id: I3823af0eed99c036eed4446cfcce69168e0cfe49
Signed-off-by: Edwin Kempin <ekempin@google.com>
(cherry picked from commit d7c99b922842e7ec567d7641312130c31585b766)
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/git/MetaDataUpdate.java b/gerrit-server/src/main/java/com/google/gerrit/server/git/MetaDataUpdate.java
index e3b1ad6..b16ccef 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/git/MetaDataUpdate.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/git/MetaDataUpdate.java
@@ -94,7 +94,7 @@
      * <pre>
      * <code>
      *   try (Repository repo = repoMgr.openRepository(allUsersName);
-     *       RevWalk rw = new RevWalk(repo) {
+     *       RevWalk rw = new RevWalk(repo)) {
      *     BatchRefUpdate batchUpdate = repo.getRefDatabase().newBatchUpdate();
      *     // WRONG: create the MetaDataUpdate instance here and reuse it for
      *     //        all updates in the loop