Clarify fetchQuery subscription
@@ -56,7 +56,7 @@ fetchQuery(
### Return Value
* `observable`: Returns an observable instance. To start the request, `subscribe` or `toPromise` must be called on the observable. Exposes the following methods:
- * `subscribe`: Function that can be called to subscribe to the observable for the network request
+ * `subscribe`: Function that can be called to subscribe to the observable for the network request. Keep in mind that this subscribes you only to the fetching of the query, not to any subsequent changes to the data within the Relay Store.
* Arguments:
* `observer`: Object that specifies observer functions for different events occurring on the network request observable. May specify the following event handlers as keys in the observer object:
* `start`: Function that will be called when the network requests starts. It will receive a single `subscription` argument, which represents the subscription on the network observable.
