Update the License header to match the new mod name

LOD -> Distance Horizons

src/main/java/com/seibel/lod/util/DetailDistanceUtil.java

@@ -1,3 +1,22 @@
+/*
+ *    This file is part of the Distant Horizon mod (formerly the LOD Mod),
+ *    licensed under the GNU GPL v3 License.
+ *
+ *    Copyright (C) 2020  James Seibel
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation, version 3.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 package com.seibel.lod.util;
 
 import com.seibel.lod.config.LodConfig;
@@ -6,6 +25,11 @@ import com.seibel.lod.enums.HorizontalQuality;
 import com.seibel.lod.enums.HorizontalResolution;
 import com.seibel.lod.wrappers.MinecraftWrapper;
 
+/**
+ * 
+ * @author Leonardo Amato
+ * @version ??
+ */
 public class DetailDistanceUtil
 {
 	private static final double genMultiplier = 1.0;