update index

Author: dungscout96

code/plugins/update_plugins.py

@@ -54,6 +54,10 @@ def update_repo(repo, formatted_name, order, plugin_type='readme', plugin_link="
 has_toc: true
 nav_order: 7
 ---
+# EEGLAB plugin documentation
+
+Below is a list of plugins that have documentation copied from GitHub. Please note that this is only a small subset of all EEGLAB plugins, as not all plugin documentation is compatible with visualization and search functionalities on the EEGLAB website. The complete list of plugins can be found [here](https://sccn.ucsd.edu/eeglab/plugin_uploader/plugin_list_all.php).
+
 '''
         for cat in ['import', 'processing']:
             text += f'## {cat.capitalize()}\n'