fix: update readme

Author: felixindrawan

README.md

@@ -7,40 +7,23 @@
 This guide walks you through building a web application that scans single-page documents using **DDS**, with **pre-defined configurations**.
 
 **Table of Contents**
-- [Scan Single-Page Documents with Dynamsoft Document Scanner](#scan-single-page-documents-with-dynamsoft-document-scanner)
-  - [License](#license)
-    - [Get a Trial License](#get-a-trial-license)
-    - [Get a Full License](#get-a-full-license)
-  - [Quick Start](#quick-start)
-    - [Option 1: Build from Source](#option-1-build-from-source)
-    - [Option 2: Use Precompiled Script](#option-2-use-precompiled-script)
-  - [Hello World Sample Explained](#hello-world-sample-explained)
-    - [Reference DDS](#reference-dds)
-    - [Instantiate DDS](#instantiate-dds)
-    - [Launch DDS](#launch-dds)
-    - [Display the Result](#display-the-result)
-  - [Custom Usage](#custom-usage)
-    - [DocumentScannerConfig Overview](#documentscannerconfig-overview)
-    - [Workflow Customization](#workflow-customization)
-      - [Example 1: Specify the Container for DocumentScanner](#example-1-specify-the-container-for-documentscanner)
-      - [Example 2: Specify Only the Container for DocumentScannerView](#example-2-specify-only-the-container-for-documentscannerview)
-      - [Example 3: Specify Individual View Containers](#example-3-specify-individual-view-containers)
-    - [View-Based Customization](#view-based-customization)
-      - [`DocumentScannerView` Configuration](#documentscannerview-configuration)
-        - [Steps to Customize the UI for `DocumentScannerView`](#steps-to-customize-the-ui-for-documentscannerview)
-        - [Styling Buttons](#styling-buttons)
-        - [Customizing Apply Button Callback](#customizing-apply-button-callback)
-      - [`DocumentResultView` Configuration](#documentresultview-configuration)
-        - [Styling Buttons](#styling-buttons-1)
-        - [Customizing the "Done" Button Callback](#customizing-the-done-button-callback)
-        - [Customizing the "Upload" Button](#customizing-the-upload-button)
-    - [Self-Hosting Resource Files](#self-hosting-resource-files)
-      - [Modify the Build Script](#modify-the-build-script)
-      - [Update the Engine Resource Paths](#update-the-engine-resource-paths)
-      - [Update the UI Configuration](#update-the-ui-configuration)
-      - [Build the Project](#build-the-project)
-      - [Serve the Project Locally](#serve-the-project-locally)
-  - [Next Step](#next-step)
+- [License](#license)
+  - [Get a Trial License](#get-a-trial-license)
+  - [Get a Full License](#get-a-full-license)
+- [Quick Start](#quick-start)
+  - [Option 1: Build from Source](#option-1-build-from-source)
+  - [Option 2: Use Precompiled Script](#option-2-use-precompiled-script)
+- [Hello World Sample Explained](#hello-world-sample-explained)
+  - [Reference DDS](#reference-dds)
+  - [Instantiate DDS](#instantiate-dds)
+  - [Launch DDS](#launch-dds)
+  - [Display the Result](#display-the-result)
+- [Custom Usage](#custom-usage)
+  - [DocumentScannerConfig Overview](#documentscannerconfig-overview)
+  - [Workflow Customization](#workflow-customization)
+  - [View-Based Customization](#view-based-customization)
+  - [Self-Hosting Resource Files](#self-hosting-resource-files)
+- [Next Step](#next-step)
 
 ## License