update dead links

Author: kczimm

website/docs/index.mdx

@@ -25,9 +25,9 @@ Developers can focus on building data apps and AI agents confidently, knowing th
 
 Spice is primarily used for:
 
-- **Data Federation**: SQL query across any database, data warehouse, or data lake. [Learn More](https://docs.spiceai.org/features/federated-queries).
+- **Data Federation**: SQL query across any database, data warehouse, or data lake. [Learn More](https://spiceai.org/docs/features/query-federation).
 - **Data Materialization and Acceleration**: Materialize, accelerate, and cache database queries. [Read the MaterializedView interview - Building a CDN for Databases](https://materializedview.io/p/building-a-cdn-for-databases-spice-ai)
-- **AI apps and agents**: An AI-database powering retrieval-augmented generation (RAG) and intelligent agents. [Learn More](https://github.com/spiceai/cookbook/tree/trunk/rag#readme).
+- **AI apps and agents**: An AI-database powering retrieval-augmented generation (RAG) and intelligent agents. [Learn More](https://github.com/spiceai/cookbook/blob/trunk/search_github_files/README.md).
 
 :::info[Watch 🎥]
 [CMU Databases - Accelerating Data and AI with Spice.ai Open-Source](https://www.youtube.com/watch?v=tyM-ec1lKfU)
@@ -113,7 +113,7 @@ Limited = Partial or restricted support
 - **OpenAI-compatible API**: Connect to hosted models (OpenAI, Anthropic, xAI) or deploy locally (Llama, NVIDIA NIM). [AI Gateway Recipe](https://github.com/spiceai/cookbook/blob/trunk/openai_sdk/README.md)
 - **Federated Data Access**: Query using SQL and NSQL (text-to-SQL) across databases, data warehouses, and data lakes with advanced query push-down for fast retrieval across disparate data sources. [Federated SQL Query Recipe](https://github.com/spiceai/cookbook/blob/trunk/federation/README.md)
 - **Search and RAG**: Search and retrieve context with accelerated embeddings for retrieval-augmented generation (RAG) workflows. [Vector Search over GitHub Files](https://github.com/spiceai/cookbook/blob/trunk/search_github_files/README.md)
-- **LLM Memory and Observability**: Store and retrieve history and context for AI agents while gaining deep visibility into data flows, model performance, and traces. [LLM Memory Recipe](https://github.com/spiceai/cookbook/blob/trunk/llm-memory/README.md) | [Monitoring Features Documentation](https://docs.spiceai.org/features/monitoring)
+- **LLM Memory and Observability**: Store and retrieve history and context for AI agents while gaining deep visibility into data flows, model performance, and traces. [LLM Memory Recipe](https://github.com/spiceai/cookbook/blob/trunk/llm-memory/README.md) | [Monitoring Features Documentation](https://spiceai.org/docs/features/observability)
 
 ### Database CDN and Query Mesh