Updates documentation

lib/msf/core/exploit/http/server.rb

@@ -868,7 +868,7 @@ protected
 	#     <script>
 	#     #{js_mstime_malloc}
 	#
-	#     shellcode = "\u4141\u4141\u4141\u4141";
+	#     shellcode = unescape("%u4141%u4141%u4141%u4141%u4141");
 	#     offset    = 3;
 	#     s         = 0x58;
 	#     mstime_malloc({shellcode:shellcode,offset:offset,heapBlockSize:s,objId:oId});