Update Main.php

Author: skyss0fly

src/ipad54/netherblocks/Main.php

@@ -138,7 +138,7 @@ public static function initializeRuntimeIds(): void
 		$method = new ReflectionMethod(RuntimeBlockMapping::class, "registerMapping");
 		$method->setAccessible(true);
 
-		$blockIdMap = json_decode(file_get_contents( nbtblock . 'block_legacy_id_map.json'), true);
+		$blockIdMap = json_decode(file_get_contents( nbtblocks . 'block_legacy_id_map.json'), true);
 		$metaMap = [];
 
 		foreach ($instance->getBedrockKnownStates() as $runtimeId => $nbt) {