message: build(package): use `types` instead of `typings` in generated alias
diff: @@ -20,7 +20,7 @@ aliasRoot.map((alias) => path.resolve(__dirname, `../${alias}`)).forEach((alias)
  aliasRoot.forEach((alias) => {
  const pkgManifest = {
  "name": `rxjs/${alias}`,
  - "typings": `../dist/types/${alias}/index.d.ts`,
  + "types": `../dist/types/${alias}/index.d.ts`,
  "main": `../dist/cjs/${alias}/index.js`,
  "module": `../dist/esm5/${alias}/index.js`,
  "es2015": `../dist/esm/${alias}/index.js`,
  