refactor: normalize Angular and Angular.js sections/resources (#5525)

* chore: improve angular / angular.js listings

- Wellnaming section
- fix book title, add format, add creators as is seen in file

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Wellnaming section
- fix book title, add format, add creators as is seen in file

via EbookFoundation#4940

* chore: improve angular / angular.js listings

- Wellnaming sections (typescript>angular, javascript>angularjs)
- Add free resources to complete listing with at least 2 items, mainly from html.it website.
- fix titles, add format, add creators as is seen in linked files

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Move Angular resources from Angular.js to TypeScript
- Add more resources to avoid single sections

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Sections (typescript>angular, javascript>angularjs)
- Add free resources to complete listing with at least 2 items.
- fix titles, add format, add creators as is seen in linked files

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Move Angular resources to TypeScript
- Well-naming sections
- fix book title, add format, add creators as is seen in files

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Move Angular resources from Angular.js to TypeScript
- Add more resources to avoid single sections
- Complete notes, titles, format, authors

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Well-naming section
- Complete notes, titles, format, authors

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Handle both as anchor. angular and angular.js

via EbookFoundation/free-programming-books#4940

* chore: improve angular / angular.js listings

- Add http://plnkr.co as valid playground for both
- Add https://stackblitz.com as valid playground for both

via EbookFoundation/free-programming-books#4940

* chore: Angular.js > AngularJS and other pitfails

- Use AngularJS as title/name
- Fix some errors with heading levels in Javascript/Typescript section
- Finish to move some resources accoding their content

via EbookFoundation/free-programming-books#4940

* feature: sections crosslinks as blockquotes

* feature: sections crosslinks as blockquotes

Mainly for AngularJS/Angular, Javascript/Typescript,
web, databases listing sections

* chore: revert scoping crosslinks only to Angular

courses/free-courses-ko.md

@@ -15,7 +15,7 @@
 * [iOS](#ios)
 * [Java](#java)
 * [JavaScript](#javascript)
-  * [Angular.js](#angular.js)
+  * [AngularJS](#angularjs)
   * [Node.js](#node.js)
   * [React.js](#react.js)
 * [Linux](#linux)
@@ -138,9 +138,9 @@
 * [JavaScript for Web Browser](https://www.youtube.com/playlist?list=PLuHgQVnccGMDTAQ0S_FYxXOi1ZJz4ikaX) (생활코딩)
 
 
-#### Angular.js
+#### AngularJS
 
-* [AngularJS](https://www.youtube.com/playlist?list=PLs_XsVQJKaBk_JN5RctLmmVrGwEzpzqaj)
+* [AngularJS](https://www.youtube.com/playlist?list=PLs_XsVQJKaBk_JN5RctLmmVrGwEzpzqaj) - 양재동 코드랩 (YouTube)
 
 
 #### Node.js