Add a description to the template part block. (#28839)

Author: mtias

packages/block-library/src/template-part/index.js

@@ -19,6 +19,9 @@ export { metadata, name };
 
 export const settings = {
 	title: _x( 'Template Part', 'block title' ),
+	description: __(
+		'Edit the different global regions of your site, like the header, footer, sidebar, or create your own.'
+	),
 	keywords: [ __( 'template part' ) ],
 	__experimentalLabel: ( { slug } ) => startCase( slug ),
 	edit,