fix typo

Author: bmatthieu3

content/posts/newsletter-016/index.md

@@ -71,7 +71,7 @@ If needed, a section can be split into subsections with a "------" delimiter.
 
 ![rib](rib.gif)
 
-Parsing a 3D model file and understand the different links between bone matrices,
+Parsing a 3D model file and understanding the different links between bone matrices,
 keyframes and vertices is a task that can take a lot of time and motivation of
 the developer. On top of that, combining the different bone transform matrices
 for the current frame is often error prone.