Try to fix markdown rendering.

Author: fsaad

docs/src/index.md

@@ -3,7 +3,9 @@
 A Julia package for learning the covariance structure of Gaussian process time
 series models.
 
-<img style="float: left" src="./assets/tsdl.161.gif" width="49%"/>  <img style="float: center" src="./assets/tsdl.533.gif" width="49%"/>
+<!-- ![png](assets/tsdl.161.gif) -->
+[<img src="assets/tsdl.161.gif" width="49%"/>](assets/tsdl.161.gif)
+
 
 ***