Be consistent with use, speakers

source/_sessions/doing-good-with-drupal.md

@@ -1,9 +1,7 @@
 ---
 title: Doing good with Drupal
-speakers:
-  - Matt Haworth
-use:
-  - speakers
+speakers: [Matt Haworth]
+use: [speakers]
 ---
 More and more charities and campaigners are choosing Drupal to create websites that raise funds, find supporters and deliver content and services to those who need it most.
 

source/_sessions/real-state-of-drupal.md

@@ -1,9 +1,7 @@
 ---
 title: The Real State of Drupal
-speakers:
-  - Dan McNamara
-use:
-  - speakers
+speakers: [Dan McNamara]
+use: [speakers]
 ---
 An honest account of the future of Drupal CMS.
 

source/_speakers/1-dan-mcnamara.md

@@ -4,10 +4,9 @@ role: Managing Director
 organisation: Microserve
 image: dan-mcnamara.jpg
 links:
-  drupalorg: danmcn
-  twitter: DanMcN
-use:
-  - sessions
+    drupalorg: danmcn
+    twitter: DanMcN
+use: [sessions]
 ---
 Dan has worked in strategic client service roles for some of the biggest and best digital agencies in London and Bristol.
 

source/_speakers/2-matt-haworth.md

@@ -4,7 +4,6 @@ role: Co-Founder
 organisation: Reason Digital
 image: matt-haworth.jpg
 links:
-  twitter: acrim
-use:
-  - sessions
+    twitter: acrim
+use: [sessions]
 ---