Reapply "Format talk page front matter"

This reverts commit 52659b653e.

source/_talks/deploying-php-fabric.md

@@ -2,39 +2,36 @@
 title: Deploying PHP Applications with Fabric
 description: How to use Fabric, a Python command line based library, to deploy your PHP applications.
 speakerdeck:
-    id: c147618ce07546ca92f92983c52d6a41
-    ratio: "1.77777777777778"
-    url: https://speakerdeck.com/opdavies/deploying-php-applications-with-fabric
+  id: c147618ce07546ca92f92983c52d6a41
+  ratio: "1.77777777777778"
+  url: https://speakerdeck.com/opdavies/deploying-php-applications-with-fabric
 meta:
-    og:
-        title: Deploying PHP Applcations with Fabric
-        description: "You've built your PHP application, now learn how to deploy it with Fabric."
-        type: website
-        image:
-            url: '%site.assets.url%/assets/images/talks/deploying-php-fabric.png'
-            width: 2560
-            height: 1440
-            type: image/png
+  og:
+    title: Deploying PHP Applcations with Fabric
+    description: "You've built your PHP application, now learn how to deploy it with Fabric."
+    type: website
+    image:
+      url: '%site.assets.url%/assets/images/talks/deploying-php-fabric.png'
+      width: 2560
+      height: 1440
+      type: image/png
 events:
-    -
-        name: PHP North West 2017
-        location: Manchester, UK
-        date: 2017-10-01
-        time: "09:00 - 09:45"
-        url: http://conference.phpnw.org.uk/phpnw17
-        joindin: https://joind.in/talk/4e35d
-    -
-        name: PHP South West
-        location: Bristol, UK
-        url: https://phpsw.uk
-        date: 2017-09-13
-        joindin: https://joind.in/talk/a5ff3
-    -
-        name: Nomad PHP
-        date: 2017-04-20
-        time: "19:00 (CET)"
-        url: https://nomadphp.com
-        online: true
+  - name: PHP North West 2017
+    location: Manchester, UK
+    date: 2017-10-01
+    time: "09:00 - 09:45"
+    url: http://conference.phpnw.org.uk/phpnw17
+    joindin: https://joind.in/talk/4e35d
+  - name: PHP South West
+    location: Bristol, UK
+    url: https://phpsw.uk
+    date: 2017-09-13
+    joindin: https://joind.in/talk/a5ff3
+  - name: Nomad PHP
+    date: 2017-04-20
+    time: "19:00 (CET)"
+    url: https://nomadphp.com
+    online: true
 ---
 
 You’ve built your application, and now you just need to deploy it. There are various ways that this could be done – from (S)FTP, to SCP and rsync, to running commands like “git pull” and “composer install” directly on the server (not recommended).