Updated End user guide (markdown)

End-user-guide.md

@@ -22,6 +22,6 @@ This is work in progress and also never finished, as new functionality and also
 ## Troubleshooting
 ### All WLED settings gone
 For instance due to crash, factory reset or update
-1. See Setting up Wifi
+1. See [Setting up Wifi](#setting-up-wifi)
 1. Change server description in Settings / User Interface
 1. Configuring a Led strip