typo

Froussios · Froussios · commit bd937ce494a1 · 2015-07-10T17:42:53.000+02:00
diff --git a/Part 4 - Concurrency/4. Backpressure.md b/Part 4 - Concurrency/4. Backpressure.md
@@ -147,7 +147,7 @@ The `request(1)` in `onStart` establishes backpressure and informs the observabl
 
 ### doOnRequested
 
-Back we where discussing the `doOn_` operators for [side effects](/Part%203%20-%20Taming%20the%20sequence/1.%20Side%20effects.md#do), we left out `doOnRequested`. 
+Back when we were discussing the `doOn_` operators for [side effects](/Part%203%20-%20Taming%20the%20sequence/1.%20Side%20effects.md#do), we left out `doOnRequested`. 
 ```java
 public final Observable<T> doOnRequest(Action1<java.lang.Long> onRequest)
 ```
