fix(@tunnckocore/package-json): update docs

Signed-off-by: Charlike Mike Reagent <[email protected]>

Author: tunnckoCore

@tunnckocore/package-json/.verb.md

@@ -1,3 +1,5 @@
+## API
+
 <!-- docks-start -->
 
 {%= include(process.cwd() + "/docs/src/index.md") %}

@tunnckocore/package-json/README.md

@@ -60,6 +60,7 @@ from [GitHub Actions](https://github.com/features/actions) with
 ## Table of Contents
 
 - [Install](#install)
+- [API](#api)
   - [packageJson](#packagejson)
 - [Contributing](#contributing)
   - [Guides and Community](#guides-and-community)
@@ -82,6 +83,8 @@ think to contribute to this project._
 $ yarn add @tunnckocore/package-json
 ```
 
+## API
+
 <!-- docks-start -->
 
 _Generated using [jest-runner-docs](https://ghub.now.sh/jest-runner-docs)._