Correct typo visible in documentation
diff --git a/httputil/httputil.go b/httputil/httputil.go
index ee38038..b077edf 100644
--- a/httputil/httputil.go
+++ b/httputil/httputil.go
@@ -4,7 +4,7 @@
 // license that can be found in the LICENSE file or at
 // https://developers.google.com/open-source/licenses/bsd.
 
-// Package htputil is a toolkit for the Go net/http package.
+// Package httputil is a toolkit for the Go net/http package.
 package httputil
 
 import (