Update go.mod

Author: tadashi-aikawa

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/briandowns/spinner v0.0.0-20180822135157-9f016caa1359
 	github.com/docopt/docopt-go v0.0.0-20180111231733-ee0de3bc6815
 	github.com/fatih/color v1.7.0 // indirect
-	github.com/google/go-github/v24 v24.0.1
+	github.com/google/go-github v24.0.1
 	github.com/hinshun/vt10x v0.0.0-20180809195222-d55458df857c // indirect
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 // indirect
 	github.com/kr/pty v1.1.4 // indirect