Correct documentation related to distributions including observeOn(...) (#1272). (#1273)

Author: zebulonj

doc/api/core/operators/observeon.md

@@ -42,8 +42,8 @@ Dist:
 - [`rx.all.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.all.compat.js)
 - [`rx.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.js)
 - [`rx.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.compat.js)
-- [`rx.lite.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.lite.js)
-- [`rx.lite.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.lite.compat.js)
+- [`rx.lite.extras.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.lite.extras.js)
+- [`rx.lite.extras.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.lite.extras.compat.js)
 
 Prerequisites:
 - None