Issue #3071143: Fix spelling.

core/lib/Drupal/Core/Render/Element/Table.php

@@ -77,7 +77,7 @@
  *   '#empty' => $this->t('No entries available.'),
  * );
  *
- * // Add arbitrarily four rows to the table. Each row contains two fiels
+ * // Add arbitrarily four rows to the table. Each row contains two fields
  * // (name and phone). The preRenderTable() method will add each
  * // sub-element (or children) of the table element to the #rows property.
  * for ($i = 1; $i <= 4; $i++) {