Update WNP 124 PDF link

bedrock/firefox/templates/firefox/whatsnew/whatsnew-fx124-na-pdf.html

@@ -60,7 +60,7 @@
       {% endif %}
 
       <p class="wnp-main-cta">
-        <a class="mzp-c-button mzp-t-product" href="https://assets.mozilla.net/wnp111-en/wnp-fx111-en.pdf" data-cta-type="button" data-cta-text="Try it now" target="_blank" rel="noopener">
+        <a class="mzp-c-button mzp-t-product" href="https://assets.mozilla.net/wnp124-en/wnp-fx124-en.pdf" data-cta-type="button" data-cta-text="Try it now" target="_blank" rel="noopener">
           Try it now
         </a>
       </p>