How do I change the text "This comment was edited." in this function.php?

<?php if ($edit_comment == "edited") {?>


<em class="comment-edited">


<?php if (isset($its_question) && $its_question == "question") {


esc_html_e('This answer was edited.','wpqa');


}else {


esc_html_e('This comment was edited.','wpqa');


}?>