Fix Connect with code steps to match actual app UI

The steps incorrectly directed users to the API keys subtab to copy
credentials separately. In the app, credentials are available directly
in the SDK code sample subtab via the Include API key toggle.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: IanWhalen

docs/set-up-a-machine/overview.md

@@ -119,10 +119,10 @@ Your machine is online. Now connect to it programmatically.
 
 1. Go to your machine's page in the Viam app.
 2. Click the **CONNECT** tab.
-3. Select **API keys** and copy your **API key** and **API key ID**.
-4. Copy the **machine address** from the same tab.
-5. Choose your language (Python, TypeScript, Golang, C++, or Flutter).
-6. Copy the code sample, install the SDK, paste in your credentials, and run it.
+3. Select **SDK code sample**.
+4. Choose your language (Python, TypeScript, Golang, C++, or Flutter).
+5. Toggle **Include API key** to embed your credentials directly in the snippet.
+6. Copy the code sample, install the SDK, and run it.
 
 If the connection succeeds, the script prints your machine's available resources.