docs: restructure MCP Java SDK documentation references

- Replace single documentation link with organized list of sections
- Add direct links to Features, Architecture, Dependencies, Client, and Server docs
- Improve navigation and discoverability of specific documentation topics

Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>

Author: tzolov

README.md

@@ -7,7 +7,13 @@ This SDK enables Java applications to interact with AI models and tools through
 ## 📚 Reference Documentation 
 
 #### MCP Java SDK documentation
-For comprehensive guides and SDK API documentation, visit the [MCP Java SDK Reference Documentation](https://modelcontextprotocol.io/sdk/java/mcp-overview).
+For comprehensive guides and SDK API documentation
+
+- [Features](https://modelcontextprotocol.io/sdk/java/mcp-overview#features) - Overview the features provided by the Java MCP SDK
+- [Acrchitecture](https://modelcontextprotocol.io/sdk/java/mcp-overview#architecture) - Java MCP SDK architecture overview.
+- [Java Dependencies / BOM](https://modelcontextprotocol.io/sdk/java/mcp-overview#dependencies) - Java dependencies and BOM.
+- [Java MCP Client](https://modelcontextprotocol.io/sdk/java/mcp-client) - Learn how to use the MCP client to interact with MCP servers.
+- [Java MCP Server](https://modelcontextprotocol.iosdk/java/mcp-server) - Learn how to implement and configure a MCP servers.
 
 #### Spring AI MCP documentation
 [Spring AI MCP](https://docs.spring.io/spring-ai/reference/api/mcp/mcp-overview.html) extends the MCP Java SDK with Spring Boot integration, providing both [client](https://docs.spring.io/spring-ai/reference/api/mcp/mcp-client-boot-starter-docs.html) and [server](https://docs.spring.io/spring-ai/reference/api/mcp/mcp-server-boot-starter-docs.html) starters. Bootstrap your AI applications with MCP support using [Spring Initializer](https://start.spring.io).