Update README.md

Author: huhuhang

README.md

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 <img width="128px" src="https://file.labex.io/path/VtELSfa4h1jh.png">
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-Jenkins is a free and open source automation server. Jenkins helps to automate the non-human part of the software development process, with continuous integration and facilitating technical aspects of continuous delivery.
+Jenkins is a leading tool for continuous integration and delivery. This Skill Tree provides a comprehensive learning path for mastering Jenkins. Ideal for DevOps beginners, it offers a structured roadmap to understand automated building, testing, and deployment. Through practical, non-video courses and hands-on exercises in a CI/CD playground, you'll gain real-world experience in setting up and managing Jenkins pipelines.
 
 |   Index | Name                                                                          | Level   | Repo                                                             | Course Link                                                  |
 |---------|-------------------------------------------------------------------------------|---------|------------------------------------------------------------------|--------------------------------------------------------------|
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 ## More Courses
 
 - [Practice Linux Programming Courses](https://github.com/labex-labs/practice-linux-programming-courses)
-- [Practice Python Programming Courses](https://github.com/labex-labs/practice-python-programming-courses)
 - [Practice DevOps Programming Courses](https://github.com/labex-labs/practice-devops-programming-courses)
-- [Practice Web Development Programming Courses](https://github.com/labex-labs/practice-web-development-programming-courses)
-- [Practice Data Science Programming Courses](https://github.com/labex-labs/practice-data-science-programming-courses)
-- [Practice Big Data Programming Courses](https://github.com/labex-labs/practice-bigdata-programming-courses)
 - [Practice Cyber Security Programming Courses](https://github.com/labex-labs/practice-cysec-programming-courses)
-- [Practice Machine Learning Programming Courses](https://github.com/labex-labs/practice-ml-programming-courses)
+- [Practice Python Programming Courses](https://github.com/labex-labs/practice-python-programming-courses)
 - [Practice Docker Programming Courses](https://github.com/labex-labs/practice-docker-programming-courses)
+- [Practice Data Science Programming Courses](https://github.com/labex-labs/practice-data-science-programming-courses)
 - [Practice Kubernetes Programming Courses](https://github.com/labex-labs/practice-kubernetes-programming-courses)
+- [Practice Big Data Programming Courses](https://github.com/labex-labs/practice-bigdata-programming-courses)
+- [Practice Machine Learning Programming Courses](https://github.com/labex-labs/practice-ml-programming-courses)
+- [Practice Web Development Programming Courses](https://github.com/labex-labs/practice-web-development-programming-courses)
 - [Practice Git Programming Courses](https://github.com/labex-labs/practice-git-programming-courses)
 - [Practice Ansible Programming Courses](https://github.com/labex-labs/practice-ansible-programming-courses)
 - [Practice Jenkins Programming Courses](https://github.com/labex-labs/practice-jenkins-programming-courses)