documentation update

[noraj]

Pull Request Template

Description

Update documentation

• change username from mBouamama to tyki6 to reflect the rename
• add bash syntax highlight
• lint markdown
• update categories

Type of change

Please delete options that are not relevant.

• [x] Documentation update

Checklist:

• [ ] I run make test
• [ ] I run make tox
• [ ] I run make lint
• [ ] I run make docstr
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have checked my code and corrected any misspellings