Add a front matter Ruby property `toc: true` to enable Table of Contents for posts. [Example Reference 1](https://blog.webjeda.com/jekyll-toc/#step-4-initiate-toc) [Example Reference 2](https://www.absingh.com/opengl/) [Example Reference 3](https://developers.google.com/open-source/gsoc/2019/mentor-oa-announcements#accepted_students_announcement)
Add a front matter Ruby property
toc: trueto enable Table of Contents for posts.Example Reference 1
Example Reference 2
Example Reference 3