message: docs: add missing preposition
  You need do nothing -> You need to do nothing
  PR Close
diff: @@ -106,7 +106,7 @@ Many libraries include definition files in their npm packages where both the Typ
  can find them. Angular is one such library.
  The `node_modules/@angular/core/` folder of any Angular application contains several `d.ts` files that describe parts of Angular.
  -**You need do nothing to get *typings* files for library packages that include `d.ts` files.
  +**You need to do nothing to get *typings* files for library packages that include `d.ts` files.
  Angular packages include them already.**
  ### lib.d.ts
  