Fix: code beautify

.gitignore

backend/src/article/article.js

backend/src/article/articleController.js

backend/src/article/articleService.js

backend/src/auth/authController.js

backend/src/db.js

backend/src/index.js

backend/src/multer.js

frontend/.gitignore

frontend/src/App.js

frontend/src/Context.js

frontend/src/components/Article.js

frontend/src/components/Comment.js

frontend/src/components/GoogleLoginButton.js

frontend/src/components/Header.js

frontend/src/components/MapForLoaction.js

frontend/src/components/SearchMapByKeyword.js

frontend/src/css/Article.css

frontend/src/index.js

frontend/src/pages/Login.js