Issue #2649748 by alexpott, danielnv18: Replace instances of "that is can" with "that it can"

core/lib/Drupal/Core/Field/WidgetBaseInterface.php

@@ -75,7 +75,7 @@ public function flagErrors(FieldItemListInterface $items, ConstraintViolationLis
   /**
    * Retrieves processing information about the widget from $form_state.
    *
-   * This method is static so that is can be used in static Form API callbacks.
+   * This method is static so that it can be used in static Form API callbacks.
    *
    * @param array $parents
    *   The array of #parents where the field lives in the form.
@@ -95,7 +95,7 @@ public static function getWidgetState(array $parents, $field_name, FormStateInte
   /**
    * Stores processing information about the widget in $form_state.
    *
-   * This method is static so that is can be used in static Form API #callbacks.
+   * This method is static so that it can be used in static Form API #callbacks.
    *
    * @param array $parents
    *   The array of #parents where the widget lives in the form.

core/modules/system/src/SystemConfigSubscriber.php

@@ -87,7 +87,7 @@ public function onConfigImporterValidateSiteUUID(ConfigImporterEvent $event) {
    */
   public static function getSubscribedEvents() {
     $events[ConfigEvents::SAVE][] = array('onConfigSave', 0);
-    // The empty check has a high priority so that is can stop propagation if
+    // The empty check has a high priority so that it can stop propagation if
     // there is no configuration to import.
     $events[ConfigEvents::IMPORT_VALIDATE][] = array('onConfigImporterValidateNotEmpty', 512);
     $events[ConfigEvents::IMPORT_VALIDATE][] = array('onConfigImporterValidateSiteUUID', 256);