Run phpcs code fixer

Author: florianJacques

src/Eloquent/DocumentModel.php

@@ -755,9 +755,7 @@ public function refresh()
         return $this;
     }
 
-    /**
-     * @inheritDoc
-     */
+    /** @inheritDoc */
     public function toArray()
     {
         $embeds = [];

src/Eloquent/EmbedsRelations.php

@@ -8,8 +8,10 @@
 use MongoDB\Laravel\Relations\EmbedsMany;
 use MongoDB\Laravel\Relations\EmbedsOne;
 use MongoDB\Laravel\Relations\EmbedsOneOrMany;
+
 use function class_basename;
 use function debug_backtrace;
+use function is_a;
 
 use const DEBUG_BACKTRACE_IGNORE_ARGS;