Use tables again for talks

source/_talks/drupal-vm-meet-symfony-console.md

@@ -1,12 +1,14 @@
 ---
 title: Drupal VM, Meet Symfony Console
 tags: [conference, php, drupal-vm, symfony]
-slides:
+speakerdeck:
+    id: 56c79770f73f4e47a542a30243437c49
+    ratio: '1.37081659973226'
     url: https://speakerdeck.com/opdavies/drupal-vm-meet-symfony-console
-    embed: <script async class="speakerdeck-embed" data-id="56c79770f73f4e47a542a30243437c49" data-ratio="1.37081659973226" src="//speakerdeck.com/assets/embed.js"></script>
 image: drupal-vm-meet-symfony-console.png
 events:
-    - { event: drupalcamp-bristol-16, date: '2016-07-23' }
+    - event: drupalcamp-bristol-16
+      date: '2016-07-23'
 ---
 _TL;DR - Come and learn about Symfony Console, with examples from a real-world project._