refactor!: app name -> domain

cli/app/cp.go

@@ -22,7 +22,7 @@ import (
 var appCpCommand = cli.Command{
 	Name:      "cp",
 	Aliases:   []string{"c"},
-	ArgsUsage: "<src> <dst>",
+	ArgsUsage: "<domain> <src> <dst>",
 	Flags: []cli.Flag{
 		internal.DebugFlag,
 		internal.NoInputFlag,
@@ -34,11 +34,11 @@ This command supports copying files to and from any app service file system.
 
 If you want to copy a myfile.txt to the root of the app service:
 
-    abra app cp <app> myfile.txt app:/
+    abra app cp <domain> myfile.txt app:/
 
 And if you want to copy that file back to your current working directory locally:
 
-		abra app cp <app> app:/myfile.txt .
+		abra app cp <domain> app:/myfile.txt .
 
 `,
 	Action: func(c *cli.Context) error {