commands: Fix golint issues

commands/hugo.go:65:1: exported method Response.IsUserError should have comment or be unexported
commands/import_jekyll.go:100:21: error strings should not be capitalized or end with punctuation or a newline
commands/server.go:417:1: receiver name sc should be consistent with previous receiver name s for serverCmd

1 files changed, 2 insertions, 0 deletions

diff --git a/commands/hugo.go b/commands/hugo.go
index a97c28294..3f1697ea9 100644
--- a/commands/hugo.go
+++ b/commands/hugo.go
@@ -62,6 +62,8 @@ type Response struct {
 	Cmd *cobra.Command
 }
 
+// IsUserError returns true is the Response error is a user error rather than a
+// system error.
 func (r Response) IsUserError() bool {
 	return r.Err != nil && isUserError(r.Err)
 }