Parameters:
-- data: see [$data section](https://github.com/shaarli/Shaarli/wiki/Plugin-System#plugins-data)
+- data: see [$data section](https://shaarli.readthedocs.io/en/master/Plugin-System/#plugins-data)
- conf: the `ConfigManager` instance.
-For exemple, if my plugin want to add data to the header, this function is needed:
+For example, if my plugin want to add data to the header, this function is needed:
hook_demo_plugin_render_header