Do not hide outputFlag in help

Author: Menghua1

cli/azd/pkg/output/parameter.go

@@ -25,7 +25,7 @@ func AddOutputFlag(f *pflag.FlagSet, s *string, supportedFormats []Format, defau
 	description := fmt.Sprintf("The output format (the supported formats are %s).", strings.Join(formatNames, ", "))
 	f.StringVarP(s, outputFlagName, "o", string(defaultFormat), description)
 	//preview:flag hide --output
-	_ = f.MarkHidden(outputFlagName)
+	// _ = f.MarkHidden(outputFlagName)
 
 	// Only error that can occur is "flag not found", which is not possible given we just added the flag on the previous line
 	_ = f.SetAnnotation(outputFlagName, supportedFormatterAnnotation, formatNames)