fix stream output created by raw_input

was using incorrect 'name', when it should have been 'stream',
creating invalid content in notebook documents.

IPython/html/static/notebook/js/outputarea.js

@@ -794,7 +794,7 b' var IPython = (function (IPython) {'
         }
         var content = {
             output_type : 'stream',
-            name : 'stdout',
+            stream : 'stdout',
             text : theprompt.text() + echo + '\n'
         }
         // remove form container