Merge pull request #828 from paulpdaniels/patch-5

Fix Typo

Author: mattpodwysocki

doc/api/core/operators/takeuntilwithtime.md

@@ -1,7 +1,7 @@
 ### <a id="rxobservableprototypetakeuntilwithtimeendtime-scheduler"></a>`Rx.Observable.prototype.takeUntilWithTime(endTime, [scheduler])`
 <a href="#rxobservableprototypetakeuntilwithtimeendtime-scheduler">#</a> [&#x24C8;](https://github.com/Reactive-Extensions/RxJS/blob/master/src/core/linq/observable/takeuntil.js "View in source")
 
-Returns the values from the source observable sequence until the other observable sequence produces a value.
+Returns the values from the source observable sequence until the end time.
 
 #### Arguments
 1. `endTime` *(`Date` | `Number`)*: Time to stop taking elements from the source sequence. If this value is less than or equal to the current time, the result stream will complete immediately.