Fix troubleshooting link for Cortex Code CLI install

Author: iamontheinet

README.md

@@ -156,7 +156,7 @@ To update later: `/plugin update cortex-code`
 | Problem | Fix |
 |---|---|
 | `snow: command not found` | Make sure `~/.local/bin` (pipx) or your Python scripts dir is in `$PATH`. Try opening a new terminal. |
-| `cortex: command not found` | Re-run the installer. If it still fails, install manually from [ai.snowflake.com](https://ai.snowflake.com). |
+| `cortex: command not found` | Re-run the installer. If it still fails, install manually from the [Cortex Code CLI docs](https://docs.snowflake.com/en/user-guide/cortex-code/cortex-code-cli). |
 | `pip`/`pipx` not found | Install Python 3.10+ first: [python.org](https://www.python.org/downloads/) |
 | Connection errors | Run `snow connection add` to create `~/.snowflake/connections.toml`. Docs: [Specify credentials](https://docs.snowflake.com/en/developer-guide/snowflake-cli/connecting/specify-credentials) |
 | Installer hangs on Windows | Run PowerShell as Administrator, or download and run the script manually. |