Minor reword

Author: javiereguiluz

http_client.rst

@@ -631,9 +631,11 @@ according to the ``multipart/form-data`` content-type. The
         'body' => $formData->bodyToIterable(),
     ]);
 
-HttpClient will stream the upload of the body by default. This might not work with all
-servers, resulting in HTTP status code 411 ("Length Required") cause there is no
-``Content-Length`` header. In this case, just turn the body into a string::
+By default, HttpClient streams the body contents when uploading them. This might
+not work with all servers, resulting in HTTP status code 411 ("Length Required")
+because there is no ``Content-Length`` header. The solution is to turn the body
+into a string with the following method (which will increase memory consumption
+when the streams are large)::
 
     $client->request('POST', 'https://...', [
         // ...