Added improved docs index and overview pages and quickstart (#3603)

docs/open-source/features/reranking.mdx

@@ -1,8 +1,6 @@
 ---
 title: Reranking
 description: 'Improve memory search relevance with advanced reranking capabilities'
-icon: "arrow-up-arrow-down"
-iconType: "solid"
 ---
 
 ## Overview
@@ -127,4 +125,4 @@ results = memory.search("query", user_id="alice", rerank=False)
 - Explore specific [reranker providers](../../components/rerankers/overview) and their capabilities
 - Learn about [configuration options](../../components/rerankers/config) for fine-tuning
 - Check out [Vector Stores](../../components/vectordbs/overview) for different storage backends
-- See [Async Memory](./async-memory) for non-blocking reranking operations
+- See [Async Memory](./async-memory) for non-blocking reranking operations