tweak

Author: alimanfoo

slides/v3-update-20190619.md

@@ -382,7 +382,11 @@ document. Store.*
 
   * I.e., chunks don't need their own metadata (at least when using a
     regular grid).
-  
+
+===
+
+### Core protocol - chunks
+
 * When reading/writing chunks, expect implementations will use some
   appropriate class for managing typed memory blocks.