Update site/about/agreement/index.html

Deleted docs/about/agreement.md, docs/about/index.md, docs/assignments/week01/doc_git.md, docs/assignments/week01/doc_mkdocs.md, docs/assignments/week01/doc_project.md, docs/assignments/week01/index.md, docs/assignments/week02/doc_cad.md, docs/assignments/week02/doc_fusion.md, docs/assignments/week02/doc_inkscape.md, docs/assignments/week02/index.md, docs/assignments/week03/doc_ccc.md, docs/assignments/week03/index.md, docs/assignments/index.md, docs/files/.gitkeep, docs/images/week01/NotionExport.jpg, docs/images/week01/banner.jpg, docs/images/week01/css.jpg, docs/images/week01/extra_style.jpg, docs/images/week01/mkdocs_command.jpg, docs/images/week01/recy_process.jpg, docs/images/week01/sketch.jpg, docs/images/week01/website_design.jpg, docs/images/week01/week1_cover.jpg, docs/images/week02/autodesk.jpg, docs/images/week02/banner.jpg, docs/images/week02/fusion360_app.jpg, docs/images/week02/recycling_machine.jpg, docs/images/week02/sieve.jpg, docs/images/week02/week2_cover.jpg, docs/images/week03/banner.jpg, docs/images/week03/week3_cover.jpg, docs/images/week04/banner.jpg, docs/images/week04/week4_cover.jpg, docs/images/week05/5.jpg, docs/images/week06/6.jpg, docs/images/favicon.png, docs/images/favicon.svg, docs/projects/final-project.md, docs/projects/sample-project.md, docs/stylesheets/extra.css