chore: updated comment on blocks rendered to identify need to extend … (

#747)

Update of comment block when using the ksesAllowedList in BlocksRenderer
to explain the need to extend the core allowed list.

### Changelog Entry
> Fixed - Comment update


### Checklist:
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- [ ] I agree to follow this project's [**Code of
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- [ ] I have updated the documentation accordingly.
- [ ] I have added tests to cover my change.
- [ ] All new and existing tests pass.

packages/core/src/react/components/BlocksRenderer.tsx

@@ -83,12 +83,12 @@ export interface BlockRendererProps {
 	html: string;
 
 	/**
-	 * The allow list for the parser
+	 * The allow list for the parser, must extend the core allowed list
 	 *
 	 * ```jsx
 	 * <BlocksRenderer
-	 *		html="<div><p>hello world</p> div content</div>"
-	 *		ksesAllowList={{ div: [] }}
+	 *		html="<div some-attribute><p>hello world</p> div content</div>"
+	 *		ksesAllowList={{ { ...ksesAllowedList, div: [...ksesAllowedList.div, 'some-attribute'] }, }}
 	 * />,
 	 * ```
 	 */