Fix a broken markdown link.

Author: hageboeck

exercises/README.md

@@ -141,7 +141,7 @@ There are multiple options if you bring a Windows machine to the course:
 2. Use an ssh client and connect to lxplus
 3. Use Visual Studio and the native Windows compiler (MSVC)
 
-We advise to use either [WSL](#wsl) or [lxplus](#lxplus), so a non-Windows experience.
+We advise to use either [WSL](#wsl) or [lxplus](#using-lxplus), so a non-Windows experience.
 This way, you can follow all exercises, especially the ones on tools, which are mostly Linux focused.
 Also, we can ensure that mentors can help you in case you get stuck.
 Using lxplus is probably the easiest, but if you have a really hard time using the terminal,