setup connections script refined

Author: Henri-ColibrITD

docs/getting-started.rst

@@ -53,18 +53,13 @@ Setup remote connection
 
 After you installed MPQP package using ``pip install``, the script
 :mod:`setup_connections.py<mpqp.execution.connection.setup_connections>` can be
-called from everywhere, not only in ``mpqp`` folder, using the following command
-line:
+called to setup your connection to the remote backends supported, using the
+following command:
 
 .. code-block:: console
 
     $ setup_connections
 
-This script will allow you to configure and save your personal account to
-connect to remote machines. Depending on the provider, different credentials can
-be asked. Information concerning which provider is configured and related
-credentials are stored in the ``~/.mpqp`` file.
-
 IBM Quantum
 ^^^^^^^^^^^
 

mpqp/execution/connection/setup_connections.py

@@ -1,4 +1,11 @@
 #! /usr/bin/env python3
+"""This script helps you configuring the connections for all the supported 
+remote backends. In time, it will also guide you to retrieve the tokens,
+passwords, etc... but for now, it is a prerequisite that you already have these
+credentials to use this script.
+
+Information concerning which provider is configured and related
+credentials are stored in the ``~/.mpqp`` file."""
 
 import mpqp.execution.connection.aws_connection as awsc
 import mpqp.execution.connection.env_manager as env_m