edit subtitle

Author: pomber

xmdx/demo/cake.mdx

@@ -21,12 +21,12 @@ to move as much content as possible to markdown
 even content that doesn't originally
 belong to markdown
 20.7 –> 23.7
-And that's why we have MDX, right?
+and that's why we have MDX, right?
 23.7 –> 31.4
 we had to extend the original format
 so we could put more things on it
 31.4 –> 34
-In this talk,
+in this talk,
 we'll take this to the extreme,
 34 –> 39
 we'll use MDX for more