Update 31 files

• /mkdocs/1-lesson1/index.html
• /mkdocs/2-lesson2/index.html
• /mkdocs/3-lesson3/index.html
• /mkdocs/4-lesson4/index.html
• /mkdocs/5-lesson5/index.html
• /mkdocs/6-lesson6/index.html
• /mkdocs/7-lesson7/index.html
• /mkdocs/css/bootstrap.min.css
• /mkdocs/css/base.css
• /mkdocs/css/font-awesome.min.css
• /mkdocs/fonts/fontawesome-webfont.eot
• /mkdocs/fonts/fontawesome-webfont.woff
• /mkdocs/fonts/fontawesome-webfont.woff2
• /mkdocs/fonts/fontawesome-webfont.svg
• /mkdocs/fonts/fontawesome-webfont.ttf
• /mkdocs/img/grid.png
• /mkdocs/img/favicon.ico
• /mkdocs/js/jquery-3.6.0.min.js
• /mkdocs/js/bootstrap.min.js
• /mkdocs/js/base.js
• /mkdocs/LICENSE_ESNET/index.html
• /mkdocs/search/worker.js
• /mkdocs/search/lunr.js
• /mkdocs/search/main.js
• /mkdocs/search/search_index.json
• /mkdocs/z-appendix_a/index.html
• /mkdocs/404.html
• /mkdocs/index.html
• /mkdocs/LICENSE
• /mkdocs/sitemap.xml
• /mkdocs/sitemap.xml.gz