typo

tests/fn.assertFunction.allOptional.phpt

@@ -21,7 +21,7 @@ Assert::exception(function () use ($fn) {
 	assertFunction($fn, parameters(optional(T1::class), optional(T2::class)), T3::class);
 }, \AssertionError::class /* todo: assert message */);
 
-// Wrong type return type
+// Wrong return type type
 Assert::exception(function () use ($fn) {
 	assertFunction($fn, parameters(optional(T1::class), optional(T2::class)), optional(T2::class));
 }, \AssertionError::class /* todo: assert message */);