docs(ai-quickstart): surface the token dashboard URL at the login step

The dashboard URL was only in the prerequisites; an AI jumping to the login
command missed it. Repeat https://platform.thatopen.com/dashboard/data at the
point where the token is actually needed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: agviegas

docs/ai-quickstart.md

@@ -24,6 +24,9 @@ npm install -g @thatopen/services@latest
 
 ## 2. Log in (do this BEFORE creating the project)
 
+Get the token from the platform dashboard — **https://platform.thatopen.com/dashboard/data**
+→ **API Tokens** → create → copy. Ask the user to paste it, then run:
+
 ```bash
 thatopen login --token <platform-token>
 ```