fix links

src/SUMMARY.md

@@ -10,7 +10,7 @@
   - [Shared Folders](usage/SharedFolders.md)
   - [Shared Notebooks](usage/SharedNotebooks.md)
   - [Links](usage/Links.md)
-  - [Link Wizard](https://jupyter.rwth-aachen.de/services/link)
+  - [Link Wizard](https://jupyter.rwth-aachen.de/services/link/)
 - [Instructors](instructors/README.md)
   - [New Profiles](instructors/NewProfiles.md)
 - [Statistics](https://jupyter.rwth-aachen.de/services/statistics/)

src/usage/Links.md

@@ -5,7 +5,7 @@ They can be used for your README.md, Websites or Moodle.
 
 ## Link creation wizard
 
-Feel free to use the [link creation wizard](https://jupyter.rwth-aachen.de/services/link) to create links the the schemes described below.
+Feel free to use the [link creation wizard](https://jupyter.rwth-aachen.de/services/link/) to create links the the schemes described below.
 
 ## Spawn and open Notebook