message: docs: fix typo in upgrade guide example
  An code snippet from a `package.json` file used `script`
  rather than `scripts`.
  Fixes
  PR Close
diff: @@ -1177,7 +1177,7 @@ Finally, you should add some npm scripts in `package.json` to compile the TypeSc
  JavaScript (based on the `tsconfig.json` configuration file):
  <code-example format="">
  - "script": {
  + "scripts": {
  "tsc": "tsc",
  "tsc:w": "tsc -w",
  ...
  