Issue #2329703 by maximpodorov: Fix spelling in varous files

core/themes/engines/twig/twig.engine

@@ -156,7 +156,7 @@ function twig_render_var($arg) {
  * Removes child elements from a copy of the original array.
  *
  * Creates a copy of the renderable array and removes child elements by key
- * specified throught filter's arguments. The copy can be printed without these
+ * specified through filter's arguments. The copy can be printed without these
  * elements. The original renderable array is still available and can be used
  * to print child elements in their entirety in the twig template.
  *

core/themes/seven/css/theme/appearance-page.css

 /**
- * Apearance page.
+ * Appearance page.
  */
 #system-themes-page h2 {
   font-weight: normal;

core/themes/seven/js/nav-tabs.js

@@ -4,7 +4,7 @@
  * Utilizes jquery.intrinsic.js to calculate if the tabs are larger than their
  * container and toggles the 'is-horizontal' class.
  *
- * This also supports collapsible navigable is the 'is-collasible' class is
+ * This also supports collapsible navigable is the 'is-collapsible' class is
  * added to the main element, and a target element is included.
  */
 (function ($, Drupal) {

core/themes/seven/seven.theme

@@ -39,7 +39,7 @@ function seven_preprocess_page(&$variables) {
 /**
  * Implements hook_pre_render_HOOK() for menu-local-tasks templates.
  *
- * Use preprocess hook to set #attached to child elemnts
+ * Use preprocess hook to set #attached to child elements
  * because they will be processed by Twig and drupal_render will
  * be invoked.
  */