Revert "remove searhx from list of services since it is not available anymore"

This reverts commit 5edf754421.

pages/en/services.html

@@ -30,6 +30,10 @@
       <a href="/events">events</a> resources, and tutorials.
     </td>
   </tr>
+  <tr>
+    <td><a href="https://search.dmz.rs/">Search</a></td>
+    <td><a href="https://github.com/searxng/searxng/">SearXNG</a> instance used for Web searching.</td>
+  </tr>
   <tr>
     <td><a href="https://pastebin.dmz.rs/">Pastebin</a></td>
     <td><a href="https://privatebin.info/">PrivateBin</a> instance we use for sharing text files</td>

pages/sr/services.html

@@ -35,6 +35,12 @@
       <a href="/projects">projekte</a> kao i ostale <a href="/events">događaje</a>.
     </td>
   </tr>
+  <tr>
+    <td><a href="https://search.dmz.rs/">Search</a></td>
+    <td><a href="https://github.com/searxng/searxng/">SearXNG</a> instanca koju koristimo za pretraživanje Interneta.
+      Bolji od Google-a.
+    </td>
+  </tr>
   <tr>
     <td><a href="https://pastebin.dmz.rs/">Pastebin</a></td>
     <td><a href="https://privatebin.info/">PrivateBin</a> instanca koju koristimo za brzo deljenje tekstualnih fajlova