Clean up whitespace

Co-authored-by: Weston Ruter <[email protected]>

Author: sirreal

tests/phpunit/tests/html-api/wpHtmlProcessorModifiableText.php

@@ -103,7 +103,7 @@ public function test_set_modifiable_fails_non_atomic_tags(
 
 	/**
 	 * Data provider.
-	 * 
+	 *
 	 * @return array<string, array{0: string, 1: string, 2: string}>
 	 */
 	public static function data_set_modifiable_fails_non_atomic_tags(): array {