Fixing the inner block link (#8476)

Update link to inner blocks

docs/block-api.md

@@ -372,7 +372,7 @@ transforms: {
 
 * **Type:** `Array`
 
-Blocks are able to be inserted into blocks that use [`InnerBlocks`](https://github.com/WordPress/gutenberg/blob/master/editor/components/inner-blocks/README.md) as nested content. Sometimes it is useful to restrict a block so that it is only available as a nested block. For example, you might want to allow an 'Add to Cart' block to only be available within a 'Product' block.
+Blocks are able to be inserted into blocks that use [`InnerBlocks`](https://github.com/WordPress/gutenberg/blob/master/packages/editor/src/components/inner-blocks/README.md) as nested content. Sometimes it is useful to restrict a block so that it is only available as a nested block. For example, you might want to allow an 'Add to Cart' block to only be available within a 'Product' block.
 
 Setting `parent` lets a block require that it is only available when nested within the specified blocks.