consumer: remove stray empty line
This was cutting off the top documentation of PollFetches
@@ -252,7 +252,7 @@ func (cl *Client) PollFetches(ctx context.Context) Fetches {
// broker returns records in a fetch. If the context quits, this function
// quits. If the context is nil or is already canceled, this function will
// return immediately with any currently buffered records.
-
+//
// This returns a maximum of maxPollRecords total across all fetches, or
// returns all buffered records if maxPollRecords is <= 0.
//
