fix: missing comma in mixins.skytils-events.json

Author: My-Name-Is-Jeff

events/src/main/resources/mixins.skytils-events.json

@@ -10,7 +10,7 @@
     "gui.MixinChatScreen",
     "render.MixinWorldRenderer",
     "network.MixinMessageHandler",
-    "world.MixinClientChunkManager"
+    "world.MixinClientChunkManager",
     //#endif
     "MixinMinecraft",
     "entity.MixinBossStatus",