Fix doc comment

Author: dktapps

src/tag/ListTag.php

@@ -98,9 +98,8 @@ private function checkTagClass(string $tagClass) : bool{
 	 * Returns $this if the tag values are of type $tagClass, null otherwise.
 	 * The returned value will have the proper PHPStan generic types set if it matches.
 	 *
-	 * If the list is empty and is of TAG_End type, the cast will always succeed, since TAG_End lists
-	 * will have their type updated as soon as a value is inserted. However, casting any other type of
-	 * empty list will fail if the type is incorrect.
+	 * If the list is empty, the cast will always succeed, as empty lists infer their
+	 * type from the first value inserted.
 	 *
 	 * @phpstan-template TTarget of Tag
 	 * @phpstan-param class-string<TTarget> $tagClass