Connectors: Format PHPStan Connector type as multi-line.

Matches the convention used across the codebase for complex
phpstan-type definitions.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: gziolo

src/wp-includes/class-wp-connector-registry.php

@@ -15,7 +15,19 @@
  * @since 7.0.0
  * @access private
  *
- * @phpstan-type Connector array{ name: string, description: string, type: string, authentication: array{ method: string, credentials_url?: string|null, setting_name?: string }, plugin?: array{ slug: string } }
+ * @phpstan-type Connector array{
+ *     name: string,
+ *     description: string,
+ *     type: string,
+ *     authentication: array{
+ *         method: string,
+ *         credentials_url?: string|null,
+ *         setting_name?: string
+ *     },
+ *     plugin?: array{
+ *         slug: string
+ *     }
+ * }
  */
 final class WP_Connector_Registry {
 	/**