Link the dated spec revision, not /draft

The surrounding sentence names 2026-07-28 as the revision that first allows
an array-rooted schema, but the link pointed at /draft, which moves on to
the next revision and stops matching the claim.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: olaservo

mcp-client-go/README.md

@@ -6,4 +6,4 @@ See the [Build an MCP client](https://modelcontextprotocol.io/docs/develop/build
 
 The SDK does not validate tool output, so this client compiles each declared `outputSchema` at connect time and checks results against it — the spec's client-side SHOULD. It uses [`jsonschema-go`](https://pkg.go.dev/github.com/google/jsonschema-go/jsonschema), already an SDK dependency.
 
-The two channels go to different readers: `Content` is forwarded to the model, while `StructuredContent` is used as data — the client counts the items it returns. See [Structured Content](https://modelcontextprotocol.io/specification/draft/server/tools#structured-content).
+The two channels go to different readers: `Content` is forwarded to the model, while `StructuredContent` is used as data — the client counts the items it returns. See [Structured Content](https://modelcontextprotocol.io/specification/2026-07-28/server/tools#structured-content).

weather-server-go/README.md

@@ -20,7 +20,7 @@ The server will communicate via stdio and expose two MCP tools:
 
 ## Structured content
 
-Both tools advertise an `outputSchema` and return `StructuredContent`. `get_forecast` returns an object; `get_alerts` returns a top-level JSON array, which protocol revision `2026-07-28` is the first to allow — see [Structured Content](https://modelcontextprotocol.io/specification/draft/server/tools#structured-content) in the spec.
+Both tools advertise an `outputSchema` and return `StructuredContent`. `get_forecast` returns an object; `get_alerts` returns a top-level JSON array, which protocol revision `2026-07-28` is the first to allow — see [Structured Content](https://modelcontextprotocol.io/specification/2026-07-28/server/tools#structured-content) in the spec.
 
 `get_forecast` sets no `OutputSchema` on the `Tool`: the SDK infers one from the handler's return type, which is the idiomatic Go spelling. `get_alerts` overrides it, because inference widens a slice to `["null", "array"]` — a nil slice marshals to `null` — and the tool never returns nil.