Update file_types.adoc
Update file_types.adoc

Tweaked the first table to 10, 65, 25 to give as much space as possible to center column. Should need no more changes.
jMonkeyEngine/wiki.jmonkeyengine.org,jMonkeyEngine/wiki.jmonkeyengine.org,jMonkeyEngine/wiki.jmonkeyengine.org,jMonkeyEngine/wiki.jmonkeyengine.org