Update environment-to-ini flag parsing (#27914)

This Fixes #27913 

This commit updates `environment-to-ini` to be compatible with update
urfave/cli/v2

Doc: <https://cli.urfave.org/v2/examples/combining-short-options/>

contrib/environment-to-ini/environment-to-ini.go

@@ -47,22 +47,26 @@ func main() {
 	on the configuration cheat sheet.`
 	app.Flags = []cli.Flag{
 		&cli.StringFlag{
-			Name:  "custom-path, C",
+			Name:    "custom-path",
+			Aliases: []string{"C"},
 			Value:   setting.CustomPath,
 			Usage:   "Custom path file path",
 		},
 		&cli.StringFlag{
-			Name:  "config, c",
+			Name:    "config",
+			Aliases: []string{"c"},
 			Value:   setting.CustomConf,
 			Usage:   "Custom configuration file path",
 		},
 		&cli.StringFlag{
-			Name:  "work-path, w",
+			Name:    "work-path",
+			Aliases: []string{"w"},
 			Value:   setting.AppWorkPath,
 			Usage:   "Set the gitea working path",
 		},
 		&cli.StringFlag{
-			Name:  "out, o",
+			Name:    "out",
+			Aliases: []string{"o"},
 			Value:   "",
 			Usage:   "Destination file to write to",
 		},