fix FeedRange definition

Author: timsander1

articles/cosmos-db/change-feed-pull-model.md

@@ -71,14 +71,16 @@ while (iteratorForThePartitionKey.HasMoreResults)
 
 ## Using FeedRange for parallelization
 
-In the [change feed processor](change-feed-processor.md), work is automatically spread across multiple consumers. In the change feed pull model, you can use the `FeedRange` to parallelize the processing of the change feed. A `FeedRange` represents a single [physical partition](partition-data.md#physical-partitions).
+In the [change feed processor](change-feed-processor.md), work is automatically spread across multiple consumers. In the change feed pull model, you can use the `FeedRange` to parallelize the processing of the change feed. A `FeedRange` represents a range of partition key values.
 
-Here's an example showing how to obtain a list of ranges for your container.
+Here's an example showing how to obtain a list of ranges for your container:
 
 ```csharp
 IReadOnlyList<FeedRange> ranges = await container.GetFeedRangesAsync();
 ```
 
+When you obtain of list of FeedRanges for your container, you'll get one `FeedRange` per [physical partition](partition-data.md#physical-partitions).
+
 Using a `FeedRange`, you can then create a `FeedIterator` to parallelize the processing of the change feed across multiple machines or threads. Unlike the previous example that showed how to obtain a single `FeedIterator` for the entire container, you can use the `FeedRange` to obtain multiple FeedIterators which can process the change feed in parallel.
 
 In the case where you want to use FeedRanges, you need to have an orchestrator process that obtains FeedRanges and distributes them to those machines. This distribution could be: