typo

router.go

diff --git a/router.go b/router.go
index 83e86fd..8b5ff34 100644
--- a/router.go
+++ b/router.go
@@ -55,7 +55,7 @@
 //
 // Catch-all parameters match anything until the path end, including the
 // directory index (the '/' before the catch-all). Since they match anything
-// until the end, catch-all paramerters must always be the final path element.
+// until the end, catch-all parameters must always be the final path element.
 //  Path: /files/*filepath
 //
 //  Requests: