strings-change-document.php

   <?php
   /**
     * Edit the output html for the Terms & Conditions page 
     *
     * @param string   $html
     *
     * @return string
     */

function cmplz_tc_document_html( $html ) {
        $html = str_replace( 'Change this word', 'into another word', $html);
        return $html;
   }
   add_filter( 'cmplz_tc_document_html', 'cmplz_edit_tc_document_html' );