Remove whitespace

example/index.dart

@@ -9,7 +9,7 @@ void main() {
   var channel = SseClient('/sseHandler');
 
   channel.stream.listen((s) {
-    // Listen for messages and send the back.
+    // Listen for messages and send them back.
     channel.sink.add(s);
   });
 }

pubspec.yaml

@@ -1,10 +1,10 @@
-name: sse 
+name: sse
 version: 1.0.0
 author: Dart Team <[email protected]>
 homepage: https://github.com/dart-lang/sse
 description: >-
   Provides client and server functionality for setting up bi-directional
-  communication through Server Sent Events (SSE) and corresponding POST 
+  communication through Server Sent Events (SSE) and corresponding POST
   requests.
 
 environment: