update "about" in locale for protections map intro modal

[lisjak]

• intro modal on protections map needs to be updated
• should reflect the most updated about version (which can be found in the modal reached from the "about" link in the header (includes updated list of contributors, etc.))
• this data is pulled from the locale files

relevant code in TitleBox.js :

        className={`summary${expanded ? '' : ' collapsed'}`}
        onClick={() => setExpanded(!expanded)}
      >
        {t('titlebox.about-map')}
      </div>

current modal: