fix broken link

jMonkeyEngine 3 Tutorial (4) - Hello Update Loop
Link to user-proposed solutions: http://jmonkeyengine.org/wiki/doku.php/jm3:solutions

src/docs/asciidoc/jme3/beginner/hello_main_event_loop.adoc

@@ -128,7 +128,7 @@ Look back at the <<jme3/beginner/hello_node#,Hello Node>> tutorial if you do not
 
 [IMPORTANT]
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-Link to user-proposed solutions: link:http://jmonkeyengine.org/wiki/doku.php/jm3:solutions[http://jmonkeyengine.org/wiki/doku.php/jm3:solutions]
+Link to user-proposed solutions: <<jm3/solutions#,Some proposed solutions>>
 +++<u>Be sure to try to solve them for yourself first!</u>+++
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