[FIX] doc: correct link for runbot

Following the last summer runbot update, the URLs have changed

closes odoo/odoo#59055

Signed-off-by: Martin Trigaux (mat) <mat@odoo.com>

doc/_extensions/odoo_ext/layout.html

@@ -277,7 +277,7 @@
                 <li><a href="https://github.com/odoo/odoo">Github</a></li>
                 <li><a href="http://www.odoo.com/page/download">Download</a></li>
                 <li class="divider"></li>
-                <li><a href="http://runbot.odoo.com/runbot/repo/git-github-com-odoo-enterprise-7">Runbot</a></li>
+                <li><a href="https://runbot.odoo.com">Runbot</a></li>
                 <li><a href="https://github.com/odoo/odoo/wiki/Translations">Translations</a></li>
                 <li class="divider"></li>
                 <li><a href="http://www.odoo.com/page/odoo-community">Mailing Lists</a></li>