change small-image

Changed small-image to match large image and fix reference

docs/index-test.md

@@ -120,11 +120,11 @@ end
 
 ### Small image
 
-![](assets/images/just-the-docs.png)
+![](../../assets/images/small-image.jpg)
 
 ### Large image
 
-![](assets/images/large-image.jpg)
+![](../../assets/images/large-image.jpg)
 
 "[Wroclaw University Library digitizing rare archival texts](https://www.flickr.com/photos/97810305@N08/9401451269)" by [j_cadmus](https://www.flickr.com/photos/97810305@N08) is marked with [CC BY 2.0](https://creativecommons.org/licenses/by/2.0/?ref=openverse).