Update further_sources.md

docs/further_sources.md

@@ -32,7 +32,7 @@ However, if you're new to this whole thing (or if you've never heard of one of t
 In the following I'll list some of the pages where you can search and find free 3D models. I only list those pages where you don't need a registration and where you can get free 3D models.  
 Some of the following pages offer direct downloads (DD), others are search engines (SE).   
 
-- https://www.printables.com/en (DD) (my personal favourite - I'm [@Meowsketeer](https://www.printables.com/@Meowsketeer) there)
+- https://www.printables.com/en (DD) (--> my personal favourite - I'm [@Meowsketeer](https://www.printables.com/@Meowsketeer) there)
 - https://www.thingiverse.com/ (DD)
 - https://www.myminifactory.com/ (DD)
 - https://cults3d.com/en/ (DD)