Add use of typescript (#2366)

* Added and Updated the readme.md file of 100-typescript-basics folder

[#1847 ](https://github.com/kamranahmedse/developer-roadmap/issues/1847) I added content to the readme.md file of 100-typescript-basics to resolve this issue

* Update content/roadmaps/104-angular/content/100-typescript-basics/readme.md

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/104-angular/content/100-typescript-basics/readme.md

@@ -1,4 +1,6 @@
 # Typescript Basics
 
+In order to enter into the world of Angular application development, typescript is necessary and it is the primary language here. Typescript is a superset of JavaScript. It comes with design-time support which is useful for type safety and tooling. Since, browsers cannot execute the TypeScript directly, it will be 'Transpiled' into JavaScript using the tsc compiler.
+
 <BadgeLink colorScheme='yellow' badgeText='Read' href='https://medium.com/jspoint/typescript-a-beginners-guide-6956fe8bcf9e'>Typescript a Beginners Guide</BadgeLink>
-<BadgeLink colorScheme='green' badgeText='Compiler' href='https://www.typescriptlang.org/play'>Typescript Playground</BadgeLink>
+<BadgeLink colorScheme='green' badgeText='Visit' href='https://www.typescriptlang.org/play'>TypeScript Playground</BadgeLink>