Newlines in fixtures (#6044)

* write newlines for fixtures

* rerun fixtures

packages/babel-plugin-transform-function-sent/test/fixtures/function-sent/basic/expected.js

@@ -10,4 +10,4 @@ let gen = (() => {
   };
 })();
 
-function _skipFirstGeneratorNext(fn) { return function () { var it = fn.apply(this, arguments); it.next(); return it; }; }
+function _skipFirstGeneratorNext(fn) { return function () { var it = fn.apply(this, arguments); it.next(); return it; }; }