Improve code readability.

config/chroot_local-includes/usr/local/sbin/tails-additional-software

@@ -107,13 +107,16 @@ def _notify(title, body="", accept_label="", deny_label="",
         urgent = ""
 
     try:
-        completed_process = subprocess.run(["sudo", "-u", LIVE_USERNAME, cmd,
-                                            title, body, accept_label,
-                                            deny_label, documentation_target,
-                                            urgent],
-                                           stdout=subprocess.PIPE,
-                                           stderr=subprocess.PIPE,
-                                           universal_newlines=True)
+        completed_process = subprocess.run(
+            [
+                "sudo", "-u", LIVE_USERNAME,
+                cmd, title, body, accept_label, deny_label,
+                documentation_target, urgent
+            ],
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+            universal_newlines=True
+        )
         if completed_process.returncode == 1:
             # sudo failed to execute the command
             raise OSError(completed_process.stderr)