BlockInspector: Add showNoBlockSelectedMessage prop documentation. (W…

…ordPress#68444)

* BlockInspector: Add showNoBlockSelectedMessage prop documentation.

* BlockInspector: Adjust Markdown list spacing for consistency

Co-authored-by: SainathPoojary <sainathpoojary@git.wordpress.org>
Co-authored-by: t-hamano <wildworks@git.wordpress.org>

packages/block-editor/src/components/block-inspector/README.md

@@ -16,6 +16,16 @@ import { BlockInspector } from '@wordpress/block-editor';
 const MyBlockInspector = () => <BlockInspector />;
 ```
 
+### Props
+
+#### showNoBlockSelectedMessage
+
+Whether to display a "No block selected" message when no block is selected.
+
+-   Type: `boolean`
+-   Required: No
+-   Default: `true`
+
 ## Related components
 
 Block Editor components are components that can be used to compose the UI of your block editor. Thus, they can only be used under a [BlockEditorProvider](https://github.com/WordPress/gutenberg/blob/HEAD/packages/block-editor/src/components/provider/README.md) in the components tree.