More type deconfusion

src/CommandShow.php

@@ -35,10 +35,11 @@ class CommandShow extends Command
             $sio->error('Configuration error: ' . $e->getMessage());
             return Command::FAILURE;
         }
-
+        /** @var array{title: string, source: string, destination: string}[] */
+        $backupElements = $app->getConfig('backup');
         $sio->table(
             ['Description', 'Source', 'Destination'],
-            $app->getConfig('backup')
+            $backupElements
         );
 
         $sio->success("Done");