fix link (#449)

docs/paper/admin/how-to/profiling.md

@@ -37,8 +37,8 @@ or learn to analyze reports yourself, check out spark's documentation [here](htt
 :::tip
 
 If you want to use a version of spark newer than the bundled one, simply place a standalone spark plugin JAR
-into the `plugins` directory and enable the [`spark.prefer-spark-plugin`](../reference/configuration/global-configuration.mdx#spark_prefer_spark_plugin)
-global configuration option.
+into the `plugins` directory and set the [`paper.preferSparkPlugin`](../reference/system-properties#paperprefersparkplugin)
+system property to `true`.
 
 :::