Issue #1844276 by YesCT, nagwani, mducharme, dawehner, jweowu: Fixed Spelling...

Issue #1844276 by YesCT, nagwani, mducharme, dawehner, jweowu: Fixed Spelling mistake in Views variable name.

core/modules/views/lib/Drupal/views/Plugin/views/filter/Combine.php

@@ -72,14 +72,14 @@ public function query() {
     }
     if ($fields) {
       $count = count($fields);
-      $seperated_fields = array();
+      $separated_fields = array();
       foreach ($fields as $key => $field) {
-        $seperated_fields[] = $field;
+        $separated_fields[] = $field;
         if ($key < $count-1) {
-          $seperated_fields[] = "' '";
+          $separated_fields[] = "' '";
         }
       }
-      $expression = implode(', ', $seperated_fields);
+      $expression = implode(', ', $separated_fields);
       $expression = "CONCAT_WS(' ', $expression)";
 
       $info = $this->operators();