Update cheatsheet filter

Author: marko-bekhta

_includes/index-docs.html

@@ -98,7 +98,7 @@ <h3 id="reference">References</h3>
     <div class="grid-wrapper">
       <div class="grid__item docs-card pdfbkg">
         <h4><a href="https://lordofthejars.github.io/quarkus-cheat-sheet/" target="_blank">Quarkus Cheat Sheet</a></h4>
-        <div class="description">Download full cheatsheet as PDF. <a href="https://developers.redhat.com/search?t=quarkus&f=type%7Echeatsheet" target="_blank">
+        <div class="description">Download full cheatsheet as PDF. <a href="https://developers.redhat.com/search?t=quarkus&f=type%7Echeat_sheet" target="_blank">
           Get more cheatsheets on the Red Hat Developers website. <i class="fas fa-external-link-alt"></i></a></div>
         <div class="keywords"></div>
         <div class="categories"></div>

_includes/index-guides.html

@@ -51,7 +51,7 @@ <h3>Quarkus Cheat Sheet</h3>
         </a>
        </div>
        <div class="grid__item col">
-         <a href="https://developers.redhat.com/search?t=quarkus&f=type%7Echeatsheet" target="_blank">Get more cheatsheets on the Red Hat Developers website <i class="fas fa-external-link-alt"></i></a>
+         <a href="https://developers.redhat.com/search?t=quarkus&f=type%7Echeat_sheet" target="_blank">Get more cheatsheets on the Red Hat Developers website <i class="fas fa-external-link-alt"></i></a>
        </div>
     </div>
   </div>