change comment

Signed-off-by: mgniu <mgniu@dataman-inc.com>

api/server/middleware.go

@@ -6,7 +6,7 @@ import (
 	"github.com/docker/docker/api/server/middleware"
 )
 
-// handleWithGlobalMiddlwares wraps the handler function for a request with
+// handlerWithGlobalMiddlewares wraps the handler function for a request with
 // the server's global middlewares. The order of the middlewares is backwards,
 // meaning that the first in the list will be evaluated last.
 func (s *Server) handlerWithGlobalMiddlewares(handler httputils.APIFunc) httputils.APIFunc {