fix link to inter doc

docs/modules/tutorials/pages/beginner/hello_main_event_loop.adoc

@@ -125,7 +125,7 @@ Look back at the xref:beginner/hello_node.adoc[Hello Node] tutorial if you do no
 
 [IMPORTANT]
 ====
-Link to user-proposed solutions: xref:beginner/solutions.adoc[Some proposed solutions] +
+Link to user-proposed solutions: <<beginner/solutions.adoc#hello-update-loop,Some proposed solutions>> +
 +++<u>Be sure to try to solve them for yourself first!</u>+++
 ====