Update README with link formatting

Author: ocots

README.md

@@ -2,7 +2,7 @@
 
 This repository is a template to create an application or a package for the [control-toolbox ecosystem](https://github.com/control-toolbox). 
 
-The instructions to set up a new application / package are given in discussion https://github.com/orgs/control-toolbox/discussions/65.
+The instructions to set up a new application / package are given in [this discussion](https://github.com/orgs/control-toolbox/discussions/65).
 
 [![**Click here to follow instructions to use this template!** ⬅️](https://img.shields.io/badge/Click_here_to_follow_instructions_to_use_this_template!-darkgreen)](https://github.com/orgs/control-toolbox/discussions/65)