diff -u b/core/modules/link/tests/src/Kernel/LinkItemSerializationTest.php b/core/modules/link/tests/src/Kernel/LinkItemSerializationTest.php
--- b/core/modules/link/tests/src/Kernel/LinkItemSerializationTest.php
+++ b/core/modules/link/tests/src/Kernel/LinkItemSerializationTest.php
@@ -78,3 +78,3 @@
   }
-  
+
 }
diff -u b/core/tests/Drupal/Tests/Core/TypedData/MapDataNormalizeTest.php b/core/tests/Drupal/Tests/Core/TypedData/MapDataNormalizeTest.php
--- b/core/tests/Drupal/Tests/Core/TypedData/MapDataNormalizeTest.php
+++ b/core/tests/Drupal/Tests/Core/TypedData/MapDataNormalizeTest.php
@@ -27,7 +27,7 @@
   /**
    * The typeDataManager.
    *
-   * @var \Drupal\Core\TypedData\TypedDataManagerInterface 
+   * @var \Drupal\Core\TypedData\TypedDataManagerInterface
    */
   protected $typedDataManager;