add links and mcp + voice examples (#438)

Author: jhills20

docs/examples.md

@@ -5,32 +5,38 @@ Check out a variety of sample implementations of the SDK in the examples section
 
 ## Categories
 
-- **agent_patterns:**
+- **[agent_patterns](https://github.com/openai/openai-agents-python/tree/main/examples/agent_patterns):**
   Examples in this category illustrate common agent design patterns, such as
-  
+
     - Deterministic workflows
     - Agents as tools
     - Parallel agent execution
 
-- **basic:**
+- **[basic](https://github.com/openai/openai-agents-python/tree/main/examples/basic):**
   These examples showcase foundational capabilities of the SDK, such as
-  
+
     - Dynamic system prompts
     - Streaming outputs
     - Lifecycle events
 
-- **tool examples:**
+- **[tool examples](https://github.com/openai/openai-agents-python/tree/main/examples/tools):**
   Learn how to implement OAI hosted tools such as web search and file search,
    and integrate them into your agents.
 
-- **model providers:**
+- **[model providers](https://github.com/openai/openai-agents-python/tree/main/examples/model_providers):**
   Explore how to use non-OpenAI models with the SDK.
 
-- **handoffs:**
+- **[handoffs](https://github.com/openai/openai-agents-python/tree/main/examples/handoffs):**
   See practical examples of agent handoffs.
 
-- **customer_service** and **research_bot:**
+- **[mcp](https://github.com/openai/openai-agents-python/tree/main/examples/mcp):**
+  Learn how to build agents with MCP.
+
+- **[customer_service](https://github.com/openai/openai-agents-python/tree/main/examples/customer_service)** and **[research_bot](https://github.com/openai/openai-agents-python/tree/main/examples/research_bot):**
   Two more built-out examples that illustrate real-world applications
-  
+
     - **customer_service**: Example customer service system for an airline.
     - **research_bot**: Simple deep research clone.
+
+- **[voice](https://github.com/openai/openai-agents-python/tree/main/examples/voice):**
+  See examples of voice agents, using our TTS and STT models.