CS nit.

core/phpcs.xml.dist

@@ -272,7 +272,7 @@
     <properties>
       <property name="spacesCountAroundEqualsSign" value="0" />
     </properties>
-    <!-- @todo broaden this in https://www.drupal.org/project/drupal/issues/3400434 -->
+    <!-- @todo Broaden this in https://www.drupal.org/project/drupal/issues/3400434 -->
     <!-- <include-pattern>*/tests/*</include-pattern> -->
     <include-pattern>*/tests/src/Traits/*</include-pattern>
     <include-pattern>./tests/Drupal/Tests/*Trait.php</include-pattern>