Make desc more generic

docs/reference-guides/core-blocks.md

@@ -567,7 +567,7 @@ Separate your content into a multi-page experience. ([Source](https://github.com
 
 ## Overlay Close
 
-A button to close navigation overlays. ([Source](https://github.com/WordPress/gutenberg/tree/trunk/packages/block-library/src/overlay-close))
+A customizable button to close overlays. ([Source](https://github.com/WordPress/gutenberg/tree/trunk/packages/block-library/src/overlay-close))
 
 -	**Name:** core/overlay-close
 -	**Category:** design

packages/block-library/src/overlay-close/block.json

@@ -4,7 +4,7 @@
 	"name": "core/overlay-close",
 	"title": "Overlay Close",
 	"category": "design",
-	"description": "A button to close navigation overlays.",
+	"description": "A customizable button to close overlays.",
 	"keywords": [ "close", "overlay", "navigation", "menu" ],
 	"textdomain": "default",
 	"attributes": {