Add WowRobo-Robotics as additional sales channel

[WowRobo-Robotics]

This Pull Request adds a new section in README.md to introduce WowRobo-Robotics as an additional sales channel for the Koch v1.1 project. We highly respect and appreciate the original work by Alexander Koch and the open-source community, and we are excited to contribute by offering a mass-produced version that makes this project more accessible.

Our mass-produced version includes several enhancements tailored for researchers and educators who need a ready-to-use solution:

1. Enhanced Gripper Design: Soft and hardware-integrated gripper with improved gripping power, making it more versatile for various tasks.
2. Durable Structure and Aesthetic Finish: Our mass-produced design uses materials with a heat deflection temperature of up to 90°C, offering greater durability and a more professional appearance compared to typical 3D-printed parts.
3. Optimized Wiring and Setup: Improved wiring layout for easier use and maintenance, minimizing clutter and enhancing performance.
4. Pre-configured for Immediate Use: Each unit is fully assembled and pre-tested, with hardware and software settings (such as ID configuration) initialized, saving users significant setup time and allowing them to focus on research and learning.

We hope that these improvements will make the Koch v1.1 robot arm even more accessible and practical for users, while staying true to the spirit of the original open-source project.