Added documention note for CLI tool

Author: Forceu

docs/setup.rst

@@ -37,6 +37,11 @@ Stable version
 """""""""""""""""
 `Download the latest release <https://github.com/Forceu/gokapi/releases/latest>`_ and copy the executable into a new folder with write permissions. Select the executable according to your system. If you are using Windows, select ``gokapi-windows_amd64``, for Mac either ``gokapi-darwin_amd64`` or ``gokapi-darwin_arm64`` and for Linux the ``gokapi-linux_`` file matching your system.
 
+
+.. note::
+
+  Make sure to select the correct binary: ``gokapi-XXX`` is the main application, while ``gokapi-cli-XXX`` is only a command-line upload tool.
+
 Unstable version
 """""""""""""""""