Fix header

Author: TheMeinerLP

src/main/java/net/onelitefeather/bettergopaint/service/UpdateService.java

@@ -1,3 +1,21 @@
+/*
+ * goPaint is designed to simplify painting inside of Minecraft.
+ * Copyright (C) Arcaniax-Development
+ * Copyright (C) Arcaniax team and contributors
+ *
+ * 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 net.onelitefeather.bettergopaint.service;
 
 import com.github.zafarkhaja.semver.Version;

src/main/java/net/onelitefeather/bettergopaint/translations/PluginTranslationRegistry.java

@@ -1,3 +1,21 @@
+/*
+ * goPaint is designed to simplify painting inside of Minecraft.
+ * Copyright (C) Arcaniax-Development
+ * Copyright (C) Arcaniax team and contributors
+ *
+ * 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 net.onelitefeather.bettergopaint.translations;
 
 import net.kyori.adventure.key.Key;

src/main/java/net/onelitefeather/bettergopaint/utils/Constants.java

@@ -1,3 +1,21 @@
+/*
+ * goPaint is designed to simplify painting inside of Minecraft.
+ * Copyright (C) Arcaniax-Development
+ * Copyright (C) Arcaniax team and contributors
+ *
+ * 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 net.onelitefeather.bettergopaint.utils;
 
 import java.net.URI;