How to change word questions in url ?

Question

Hello,

I want to change word from questions to items at the end of this url.

Its user questions page.

Example - https://www.question2answer.org/qa/user/gidgreen/questions

I want to change this url to - https://www.question2answer.org/qa/user/gidgreen/items

Do i need to change user-questions.php template name 

or 

i can change  this in qa-config.php file ----

$QA_CONST_PATH_MAP=array('questions' => '');

Thank you for your help