Update contributions.adoc
Update contributions.adoc

Reordered text to be under images so it will float up to the left and align even with image top.
jMonkeyEngine/wiki.jmonkeyengine.org,jMonkeyEngine/wiki.jmonkeyengine.org,jMonkeyEngine/wiki.jmonkeyengine.org,jMonkeyEngine/wiki.jmonkeyengine.org