updated the lab-tool to use correct keys

packages/lab-tool/config/config.scm

@@ -24,7 +24,8 @@
 
 (define (get-ssh-config machine-name)
   "Get SSH configuration for a machine"
-  `((hostname . ,(symbol->string machine-name))
+  (let ((hostname (symbol->string machine-name)))
+    `((hostname . ,hostname)
       (user . "sma")
       (identity-file . "~/.ssh/id_ed25519_admin")
       (is-local . #f)))

packages/lab-tool/utils/ssh.scm

@@ -141,4 +141,6 @@
           #f))
       (begin
         (log-error "Cannot establish SSH connection to ~a" machine-name)
-        #f)))
+        #f))))
+
+;; Ensure file ends with a newline and all parentheses are closed