link engines index page to sidebar

Author: Blargian

sidebars.js

@@ -496,6 +496,7 @@ const sidebars = {
       label: "Engines",
       collapsed: false,
       collapsible: false,
+      link: {type: "doc", id: "engines/index"},
       items: [
         {
           type: "autogenerated",
@@ -1754,7 +1755,7 @@ const sidebars = {
           type: "link",
           label: "Engines",
           description: "Use the right table and database engines for your data",
-          href: "/engines/database-engines"
+          href: "/engines"
         },
         {
           type: "link",