Fix, coauthors API endpoint should be plural

README.md

@@ -143,7 +143,7 @@ Example:
 
 ## Block Example Data
 
-When working with Full Site Editing, or in the post editor before the authors are loaded, example data is used. The example data provided with the co-author blocks resembles a response to the `/coauthors/v1/coauthor/:user-nicename` REST API endpoint.
+When working with Full Site Editing, or in the post editor before the authors are loaded, example data is used. The example data provided with the co-author blocks resembles a response to the `/coauthors/v1/coauthors/:user-nicename` REST API endpoint.
 
 ### Extending
 

php/api/endpoints/class-coauthors-controller.php

@@ -93,14 +93,14 @@ public function register_coauthors_route(): void {
 	 *
 	 * Provide a user nicename as a hyphen-separated string to retrieve a single co-author.
 	 *
-	 * Example: `/wp-json/coauthors/v1/coauthor/user-nicename`
+	 * Example: `/wp-json/coauthors/v1/coauthors/user-nicename`
 	 *
 	 * @since 3.6.0
 	 */
 	public function register_coauthor_route(): void {
 		register_rest_route(
 			'coauthors/v1',
-			'/coauthor/(?P<user_nicename>[\w-]+)',
+			'/coauthors/(?P<user_nicename>[\w-]+)',
 			array(
 				'args' => array(
 					'user_nicename' => array(

php/blocks/class-blocks.php

@@ -173,7 +173,7 @@ public static function get_author_with_api_schema( $author ): ?array {
 			WP_REST_Request::from_url(
 				home_url(
 					sprintf(
-						'/wp-json/coauthors/v1/coauthor/%s',
+						'/wp-json/coauthors/v1/coauthors/%s',
 						$author->user_nicename
 					)
 				)