[DOCS] Update connectors link on landing page (#115904)

(cherry picked from commit feea0a0)

Author: leemthompo

docs/reference/landing-page.asciidoc

@@ -128,7 +128,7 @@
       <a href="https://www.elastic.co/guide/en/cloud/current/ec-cloud-ingest-data.html">Adding data to Elasticsearch</a>
     </li>
     <li>
-      <a href="https://www.elastic.co/guide/en/enterprise-search/current/connectors.html">Connectors</a>
+      <a href="es-connectors.html">Connectors</a>
     </li>
     <li>
       <a href="https://www.elastic.co/guide/en/enterprise-search/current/crawler.html">Web crawler</a>