Fix compilation errors from 1.21.11 changes

Author: Choonster

src/main/java/com/example/examplemod/Config.java

@@ -1,6 +1,6 @@
 package com.example.examplemod;
 
-import net.minecraft.resources.ResourceLocation;
+import net.minecraft.resources.Identifier;
 import net.minecraft.world.item.Item;
 import net.minecraftforge.common.ForgeConfigSpec;
 import net.minecraftforge.eventbus.api.listener.SubscribeEvent;
@@ -43,7 +43,7 @@ public class Config {
     public static Set<Item> items;
 
     private static boolean validateItemName(final Object obj) {
-        return obj instanceof final String itemName && ForgeRegistries.ITEMS.containsKey(ResourceLocation.tryParse(itemName));
+        return obj instanceof final String itemName && ForgeRegistries.ITEMS.containsKey(Identifier.tryParse(itemName));
     }
 
     @SubscribeEvent
@@ -54,7 +54,7 @@ static void onLoad(final ModConfigEvent event) {
 
         // convert the list of strings into a set of items
         items = ITEM_STRINGS.get().stream()
-                .map(itemName -> ForgeRegistries.ITEMS.getValue(ResourceLocation.tryParse(itemName)))
+                .map(itemName -> ForgeRegistries.ITEMS.getValue(Identifier.tryParse(itemName)))
                 .collect(Collectors.toSet());
     }
 }

src/main/java/com/example/examplemod/ExampleMod.java

@@ -87,7 +87,7 @@ public ExampleMod(FMLJavaModLoadingContext context) {
         CREATIVE_MODE_TABS.register(modBusGroup);
 
         // Register the item to a creative tab
-        BuildCreativeModeTabContentsEvent.getBus(modBusGroup).addListener(ExampleMod::addCreative);
+        BuildCreativeModeTabContentsEvent.BUS.addListener(ExampleMod::addCreative);
 
         // Register our mod's ForgeConfigSpec so that Forge can create and load the config file for us
         context.registerConfig(ModConfig.Type.COMMON, Config.SPEC);