Update handbook link in readme (microsoft#43813)

Co-authored-by: Andrew Thongsavath <[email protected]>

Author: athongsavath

Diff for: README.md

@@ -43,7 +43,7 @@ with any additional questions or comments.
 ## Documentation
 
 *  [TypeScript in 5 minutes](https://www.typescriptlang.org/docs/handbook/typescript-in-5-minutes.html)
-*  [Programming handbook](https://www.typescriptlang.org/docs/handbook/basic-types.html)
+*  [Programming handbook](https://www.typescriptlang.org/docs/handbook/intro.html)
 *  [Homepage](https://www.typescriptlang.org/)
 
 ## Building