Fix trivial typos in code

commands/server.go

@@ -43,7 +43,7 @@ var disableLiveReload bool
 var serverCmd = &cobra.Command{
 	Use:   "server",
 	Short: "A high performance webserver",
-	Long: `Hugo provides it's own webserver which builds and serves the site.
+	Long: `Hugo provides its own webserver which builds and serves the site.
 While hugo server is high performance, it is a webserver with limited options.
 Many run it in production, but the standard behavior is for people to use it in development
 and use a more full featured server such as Nginx or Caddy.

commands/undraft.go

@@ -78,7 +78,7 @@ func Undraft(cmd *cobra.Command, args []string) {
 	return
 }
 
-// undraftContent: if the content is a draft, change it's draft status to
+// undraftContent: if the content is a draft, change its draft status to
 // 'false' and set the date to time.Now(). If the draft status is already
 // 'false', don't do anything.
 func undraftContent(p parser.Page) (bytes.Buffer, error) {