Update help and version desc

help.go

@@ -9,7 +9,7 @@ import (
 
 var cmdHelp = &Command{
 	Usage: "help [command]",
-	Short: "show help",
+	Short: "Show help",
 	Long:  `Help shows usage for a command.`,
 }
 

version.go

@@ -9,7 +9,7 @@ const Version = "dev"
 var cmdVersion = &Command{
 	Run:   runVersion,
 	Usage: "version",
-	Short: "show gh version",
+	Short: "Show gh version",
 	Long:  `Version shows the gh client version showstring.`,
 }