fix: point README link to file instead of directory for typedoc

Author: felixweinberger

examples/server/README.md

@@ -38,7 +38,7 @@ pnpm tsx src/simpleStreamableHttp.ts
 | Task interactive server                   | Task-based execution with interactive server→client requests.                                   | [`src/simpleTaskInteractive.ts`](src/simpleTaskInteractive.ts)                           |
 | Hono Streamable HTTP server               | Streamable HTTP server built with Hono instead of Express.                                      | [`src/honoWebStandardStreamableHttp.ts`](src/honoWebStandardStreamableHttp.ts)           |
 | SSE polling demo server                   | Legacy SSE server intended for polling demos.                                                   | [`src/ssePollingExample.ts`](src/ssePollingExample.ts)                                   |
-| External auth server (RFC 8707)           | MCP server + separate OAuth2 AS with JWT tokens and JWKS verification.                          | [`src/externalAuthServer/`](src/externalAuthServer/)                                     |
+| External auth server (RFC 8707)           | MCP server + separate OAuth2 AS with JWT tokens and JWKS verification.                          | [`src/externalAuthServer/`](src/externalAuthServer/README.md)                            |
 
 ## OAuth demo flags (Streamable HTTP server)