Choices for --output-style in small caps

lib/cli/commands/build.js

@@ -129,8 +129,8 @@ build.builder = function(cli) {
 				"type 'application' always result in a flat output." +
 				"No other dependencies can be included in the build result.",
 			type: "string",
-			default: "Default",
-			choices: ["Default", "Flat", "Namespace"],
+			default: "default",
+			choices: ["default", "flat", "namespace"],
 		})
 		.example("ui5 build", "Preload build for project without dependencies")
 		.example("ui5 build self-contained", "Self-contained build for project")
@@ -188,7 +188,7 @@ async function handleBuild(argv) {
 		includedTasks: argv["include-task"],
 		excludedTasks: argv["exclude-task"],
 		cssVariables: argv["experimental-css-variables"],
-		outputStyle: argv["output-style"],
+		outputStyle: (argv["output-style"].charAt(0).toUpperCase() + argv["output-style"].slice(1)),
 	});
 }