chore: update sidebar highlights for docs

Author: github-actions[bot]

user-guide/02-Experiment basics/04-set-up-an-experiment.md

@@ -2,6 +2,7 @@
 title: Setting up an experiment
 slug: /set-up-an-experiment
 hide_table_of_contents: true
+sidebar_class_name: sidebar-item--updated
 ---
 
 import AssemblyInstructionBlock from '@site/src/components/AssemblyInstructionBlock';