Fix namespace

Author: Alexander Miertsch

scripts/create_event_stream.php

@@ -1,7 +1,7 @@
 <?php
 declare(strict_types=1);
 
-namespace Prooph\Workshop;
+namespace Prooph\EventMachine;
 
 use ArrayIterator;
 use Prooph\EventStore\EventStore;
@@ -19,4 +19,4 @@
 
 $eventStore->create(new Stream(new StreamName('event_stream'), new ArrayIterator()));
 
-echo "done.\n";
+echo "done.\n";