Fixed typo from filed to field

Author: peterjaap

app/code/Magento/Catalog/Model/ResourceModel/Category.php

@@ -920,7 +920,7 @@ public function changeParent(
         $childrenCount = $this->getChildrenCount($category->getId()) + 1;
         $table = $this->getEntityTable();
         $connection = $this->getConnection();
-        $levelFiled = $connection->quoteIdentifier('level');
+        $levelField = $connection->quoteIdentifier('level');
         $pathField = $connection->quoteIdentifier('path');
 
         /**
@@ -960,7 +960,7 @@ public function changeParent(
                         $newPath . '/'
                     ) . ')'
                 ),
-                'level' => new \Zend_Db_Expr($levelFiled . ' + ' . $levelDisposition)
+                'level' => new \Zend_Db_Expr($levelField . ' + ' . $levelDisposition)
             ],
             [$pathField . ' LIKE ?' => $category->getPath() . '/%']
         );