🐛 verdi devel: correct the localhost description (aiidateam#7600)

`prepare_localhost` credits the computer it creates to
`aiida.engine.launch_shell_job`. That description was copied from
`aiida-shell` back when `verdi devel launch-add` was added, and has
named nothing in core ever since. Integrating `launch_shell_job` turns
it into a reference to a real function, which still is not what creates
this computer, so credit `verdi devel launch-add` instead.

Author: GeigerJ2

src/aiida/cmdline/commands/cmd_devel.py

@@ -267,7 +267,7 @@ def prepare_localhost():
         computer = Computer(
             label='localhost',
             hostname='localhost',
-            description='Localhost automatically created by `aiida.engine.launch_shell_job`',
+            description='Localhost automatically created by `verdi devel launch-add`',
             transport_type='core.local',
             scheduler_type='core.direct',
             workdir=tempfile.gettempdir(),