Move documentation files in the docs folder

[Ayushi271]

Description

Fixes # [ISSUE]

Type of Change:

• Code
• Quality Assurance
• User Interface
• Outreach
• Documentation

Code/Quality Assurance Only

• Bug fix (non-breaking change which fixes an issue)
• This change requires a documentation update (software upgrade on readme file)
• New feature (non-breaking change which adds functionality pre-approved by mentors)

How Has This Been Tested?

Checklist:

• [ ] My PR follows the style guidelines of this project
• [ ] I have performed a self-review of my own code or materials
• [ ] I have commented my code or provided relevant documentation, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] I have attached link of deployed site.
• [ ] Any dependent changes have been merged

Code/Quality Assurance Only

• [ ] My changes generate no new warnings
• [ ] My PR currently breaks something (fix or feature that would cause existing functionality to not work as expected)
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes
• [ ] Any dependent changes have been published in downstream modules

As I have made some previous commits but have to delete them that's why I already have moved the files to the doc folder but some links were broken so I fix it in this now it's working fine.