archwiki/templates/LocalSettings.php.j2: place the commands in the QuestyCaptcha question inside <code> tags

This makes it more easier to distinguish the command from the rest of the text.

roles/archwiki/templates/LocalSettings.php.j2

@@ -27,7 +27,7 @@ $wgSecretKey = "{{ vault_archwiki_wg_secret_key }}";
 $wgUpgradeKey = "{{ vault_archwiki_wg_upgrade_key }}";
 
 $wgCaptchaQuestions = [
-    'What is the output of "pacman -V|base32|head -1"' => trim(file_get_contents("{{ archwiki_question_answer_file }}"))
+    'What is the output of: <code>pacman -V|base32|head -1</code>' => trim(file_get_contents("{{ archwiki_question_answer_file }}"))
 ];
 
 $wgSMTP = array(