Updated readme: Added Roadmap.sh subsection and it's content

[sanyadureja]

Description

Included a new subsection titled "Roadmap.sh" under the "Roadmap" heading in the Table of Contents to provide direct access to specific learning paths for aspiring Machine Learning professionals from https://roadmap.sh/.

Under Roadmap.sh section, I've added a table with links to various ML roadmaps and their description, i.e. updated the content to feature specific Machine Learning career paths, such as AI and Data Scientist, Data Analyst, MLOps, and Prompt Engineering, with brief descriptions outlining the focus of each roadmap.

Fixes #1227 (issue)

Type of change

• [ ✅] Documentation update

Checklist:

• [✅] My code follows the style guidelines of this project
• [✅] I have performed a self-review of my own code
• [✅] I have commented my code, particularly in hard-to-understand areas
• [✅] I have made corresponding changes to the documentation
• [✅ ] My changes generate no new warnings

[github-actions]

Thank you for submitting your pull request! 🙌 We'll review it as soon as possible. In the meantime, please ensure that your changes align with our CONTRIBUTING.md. If there are any specific instructions or feedback regarding your PR, we'll provide them here. Thanks again for your contribution! 😊

[sanyadureja]

@sanjay-kv I've updated the README file and raised a PR, looking forward to it's approval.

[sanyadureja]

Thank you sir @sanjay-kv