REST API: Correct spelling error in block_hooks field documentation.

In [56587], a spelling error was introduced in the documentation of the new `block_hooks` field in `WP_REST_Block_Types_Controller`.

This fixes the spelling error.

Follow-up to [56587].

Props kebbet, mukesh27, tahmina1du.
Fixes #59426. See #59346.

git-svn-id: https://develop.svn.wordpress.org/trunk@56668 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/rest-api/endpoints/class-wp-rest-block-types-controller.php

@@ -708,7 +708,7 @@ public function get_item_schema() {
 				'keywords'              => $keywords_definition,
 				'example'               => $example_definition,
 				'block_hooks'           => array(
-					'description'       => __( 'This block is automatically inserted near any occurence of the block types used as keys of this map, into a relative position given by the corresponding value.' ),
+					'description'       => __( 'This block is automatically inserted near any occurrence of the block types used as keys of this map, into a relative position given by the corresponding value.' ),
 					'type'              => 'object',
 					'patternProperties' => array(
 						'^[a-zA-Z0-9-]+/[a-zA-Z0-9-]+$' => array(