docs: provide URL for the V8 docs app (#7244)

jakovljevic-mladen · web-flow · commit 2947583bb33e · 2023-06-19T23:17:55.000+02:00
diff --git a/docs_app/content/navigation.json b/docs_app/content/navigation.json
@@ -120,6 +120,10 @@
     }
   ],
   "docVersions": [
+    {
+      "title": "next",
+      "url": "https://next.rxjs.dev/"
+    },
     {
       "title": "stable",
       "url": "https://rxjs.dev/"
