Moved DocumentationPrinter to internal.util.

src/main/java/com/sk89q/worldedit/internal/util/DocumentationPrinter.java

@@ -17,7 +17,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-package com.sk89q.worldedit.dev;
+package com.sk89q.worldedit.internal.util;
 
 import java.io.File;
 import java.io.FileOutputStream;