docs: update project description and key features in README.md (#484)

Signed-off-by: Alfi Maulana <alfi.maulana.f@gmail.com>

README.md

@@ -2,19 +2,16 @@
 
 # Action Starter
 
-A minimalistic [GitHub repository template](https://docs.github.com/en/repositories/creating-and-managing-repositories/creating-a-repository-from-a-template) to kickstart your [GitHub Action](https://github.com/features/actions) project.
+A minimalist template for starting a new [GitHub Action](https://github.com/features/actions) project.
+
+This template provides a basic GitHub Action project containing a sample [JavaScript action](https://docs.github.com/en/actions/sharing-automations/creating-actions/creating-a-javascript-action) written in [TypeScript](https://www.typescriptlang.org/), with built-in support for formatting, linting, testing, and continuous integration.
 
 ## Key Features
 
-- Includes a sample metadata file for a GitHub action.
-- Develops logic for the GitHub action in [Node.js](https://nodejs.org/en) using the following stacks:
-  - [Yarn](https://yarnpkg.com/) for project management.
-  - [TypeScript](https://www.typescriptlang.org/) for type checking.
-  - [Jest](https://jestjs.io/) for unit testing.
-  - [ESLint](https://eslint.org/) for static analysis.
-  - [Prettier](https://prettier.io/) for code formatting.
-- Provides a sample workflow file for testing the action.
-- Supports dependency updates with [Dependabot](https://docs.github.com/en/code-security/dependabot).
+- Minimal GitHub Action project written in TypeScript with [ESM](https://nodejs.org/api/esm.html) support.
+- Uses [Yarn](https://yarnpkg.com/) as the package manager with [Plug'n'Play](https://yarnpkg.com/features/pnp) support.
+- Supports formatting with [Prettier](https://prettier.io/), linting with [ESLint](https://eslint.org/), and testing with [Jest](https://jestjs.io/).
+- Preconfigured workflows for [Dependabot](https://docs.github.com/en/code-security/dependabot) and [GitHub Actions](https://github.com/features/actions).
 
 ## Usage