add screenshot for connecting specter to core

_pages/setup-computer/specter.md

@@ -10,9 +10,9 @@ Grab the latest release of the `Specter-Desktop` app:
 For Windows the installer is `specter_desktop_setup.exe` and for MacOS it is `SpecterDesktop-v0.x.x.dmg` (where `x.x` represent the current version number).
 
 #### Connect Specter-Desktop to Your Bitcoin Core Node
-If your node is run on the same computer as Specter, Specter will likely be able to automatically detect authentication info from a `.cookie` file that bitcoin core created on your computer.
+If your node is running on the same computer as Specter, then Specter should automatically detect authentication info from the default Bitcoin Core data directory.
 
-TODO: add screenshot.
+![](/assets/img/setup-specter-detect-node.png){:width="70%" class="border_image"}
 
 
 {% include next_steps.md next_url="/setup-wallets" next_name="Setup Hardware Wallets" %}