typeAhead.php: refactor variable name.

extension/qfq/api/typeahead.php

@@ -20,9 +20,9 @@ require_once(__DIR__ . '/../qfq/Constants.php');
  *
  */
 try {
-    $qfq = new \qfq\TypeAhead();
+    $typeAhead = new \qfq\TypeAhead();
 
-    $answer = $qfq->process();
+    $answer = $typeAhead->process();
 
 } catch (\Exception $e) {
 //    $answer[API_MESSAGE] = "Generic Exception: " . $e->getMessage();