Fix CodeStyle

fix #798

src/Jenssegers/Mongodb/Collection.php

@@ -49,12 +49,12 @@ class Collection
             $query = [];
 
             // Convert the query paramters to a json string.
-            array_walk_recursive($parameters, function (&$item, $key){
+            array_walk_recursive($parameters, function (&$item, $key) {
                 if ($item instanceof \MongoDB\BSON\ObjectID) {
                     $item = (string) $item;
                 }
             });
-            
+
             foreach ($parameters as $parameter) {
                 try {
                     $query[] = json_encode($parameter);

tests/CollectionTest.php

@@ -26,7 +26,7 @@ class CollectionTest extends TestCase
         $connection->expects($this->once())->method('logging')->willReturn(true);
         $connection->expects($this->once())->method('getElapsedTime')->willReturn($time);
         $connection->expects($this->once())->method('logQuery')->with($queryString, [], $time);
-        
+
         $collection = new Collection($connection, $mongoCollection);
 
         $this->assertEquals($return, $collection->findOne($where));