Cartzilla - Single Product "Created by" text change

functions.php

if( ! function_exists( 'cartzilla_dokan_product_author_info' ) ) {
    function cartzilla_dokan_product_author_info( $user_id = null ) {
        if( cartzilla_is_dokan_activated()): 
            if ( ! $user_id ) {
                $user_id = get_post_field( 'post_author', get_the_id() );
            }

            $user_data = get_userdata( $user_id );
            $store_info = dokan_get_store_info( $user_id );
            $storename = isset( $store_info['store_name'] ) && ! empty( $store_info['store_name'] ) ? $store_info['store_name'] : ( is_object( $user_data ) ? $user_data->display_name : '' );
            $gravatar_url = get_avatar_url( $user_id );

            if( ! empty( $storename ) ) :
                ?>
                <div class="bg-secondary rounded p-3 mb-2">
                    <a class="media align-items-center" href="<?php echo esc_url( dokan_get_store_url( $user_id ) ); ?>">
                        <img class="rounded-circle" width="50" src="<?php echo esc_url( $gravatar_url ); ?>" alt="<?php echo esc_attr( $storename ); ?>">
                        <div class="media-body pl-2">
                            <span class="font-size-ms text-muted"><?php echo esc_html__('Created by', 'cartzilla');?></span>
                            <h6 class="font-size-sm mb-0"><?php echo esc_attr( $storename ); ?></h6>
                        </div>
                    </a>
                </div>
                <?php
            endif;
        endif;
    }
}