minor fixes

Author: iliakan

4-binary/03-blob/article.md

@@ -225,7 +225,7 @@ blob.arrayBuffer().then(buffer => /* process the ArrayBuffer */);
 
 When we read and write to a blob of more than `2G`, the use of `arrayBuffer` becomes more memory intensive for us. At this point, we can directly convert the blob to a stream.
 
-A stream is a special object that allows to read from it (or write into it) portion by portion. It's outside of our scope here, but here's an example, and you can read more at <https://developer.mozilla.org/en-US/docs/Web/API/Streams_API>.
+A stream is a special object that allows to read from it (or write into it) portion by portion. It's outside of our scope here, but here's an example, and you can read more at <https://developer.mozilla.org/en-US/docs/Web/API/Streams_API>. Streams are convenient for data that is suitable for processing piece-by-piece.
 
 The `Blob` interface's `stream()` method returns a `ReadableStream` which upon reading returns the data contained within the `Blob`.