Fix protocol-relative URLs in speakerdeck embeds

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: GarthDB

_posts/2014-10-10-convergerva2014.md

@@ -21,7 +21,7 @@ This topic is aimed at designers and some development practices will be discusse
 
 ## Slides
 
-<div class="video-wrapper"><script async class="speakerdeck-embed" data-id="cc97bfb0fd45013028412ea85c7f8b0b" data-ratio="1.29456384323641" src="//speakerdeck.com/assets/embed.js"></script></div>
+<div class="video-wrapper"><script async class="speakerdeck-embed" data-id="cc97bfb0fd45013028412ea85c7f8b0b" data-ratio="1.29456384323641" src="https://speakerdeck.com/assets/embed.js"></script></div>
 
 ## Photos
 

_posts/2014-10-22-allthingsopen2014.md

@@ -15,7 +15,7 @@ Although the design community is becoming more active in the open source communi
 
 ## Slides
 
-<div class="video-wrapper"><script async class="speakerdeck-embed" data-id="a3acf7803c510132b7d4027c1edc7060" data-ratio="1.29456384323641" src="//speakerdeck.com/assets/embed.js"></script></div>
+<div class="video-wrapper"><script async class="speakerdeck-embed" data-id="a3acf7803c510132b7d4027c1edc7060" data-ratio="1.29456384323641" src="https://speakerdeck.com/assets/embed.js"></script></div>
 
 ## Photos