Update intro.md

Author: prafull-opensignlabs

docs/docs/API-docs/intro.md

@@ -1,26 +1,9 @@
-# Overview
-
-OpenSign™ API offers a robust suite of functionalities for digital document management and electronic signatures. Designed to cater to a wide array of business needs, the API facilitates the creation, signing, and management of digital documents. It ensures secure and efficient processes, complying with international legal standards for electronic signatures.
-
-# Key Features
-
-- **Document Creation**: Allows for the generation of digital documents directly through the API.
-- **Template Creation**: Supports the creation and management of document templates for consistent use across various applications.
-- **Electronic Signature Integration**: Provides capabilities for incorporating electronic signatures into documents.
-- **User Management**: Facilitates the management of user accounts, permissions, and roles within an application.
-- **Contacts Management**: Enables efficient handling of contact information and integration with document processes.
-- **Compliance and Security**: Ensures all operations adhere to global legal standards for electronic signatures and data security.
-- **Customization and Flexibility**: Offers highly customizable workflows, tailored to meet diverse organizational requirements.
-- **Cross-Platform Compatibility**: Assures seamless functionality across various platforms and devices.
-
-# Target Audience
-
-- **Developers and IT Professionals**: Implementing digital document management and electronic signature solutions.
-- **Businesses and Enterprises**: Seeking efficient and secure digital document workflows.
-- **Legal and Compliance Teams**: Requiring digital solutions compliant with legal standards for signatures and document management.
-
-# Usage Scenarios
-
-- Streamlining contract creation and signing processes in corporate environments.
-- Managing user permissions and contacts for large-scale document workflows.
-- Utilizing templates for standardized document processes in legal, financial, and governmental sectors.
+---
+id: api-intro
+title: OpenSign APIs
+sidebar_label: Overview
+---
+
+Welcome to the OpenSign API. Choose a version from the sidebar:
+- **v1** — stable baseline
+- **v1.1** — latest additions, backward-compatible with v1