diff --git a/core/lib/Drupal/Component/Utility/PlaceholderTrait.php b/core/lib/Drupal/Component/Utility/PlaceholderTrait.php
index 9d06112..49ece36 100644
--- a/core/lib/Drupal/Component/Utility/PlaceholderTrait.php
+++ b/core/lib/Drupal/Component/Utility/PlaceholderTrait.php
@@ -19,7 +19,7 @@
    * an HTML template language. As such, the passed-in string:
    * - Should contain minimal HTML.
    * - Should not be used within the "<" and ">" of an HTML tag, such as in HTML
-   * attribute values. This would be a security risk. Examples:
+   *   attribute values. This would be a security risk. Examples:
    *   - Insecure: <@variable>text</@variable>
    *   - Insecure: <a @variable>link text</a>
    *   - Insecure: <a title="@variable">link text</a>