docs(readme): remove extra scripts (#77)

Co-authored-by: Almanov Nikita <[email protected]>

Author: github-actions[bot]

README.md

@@ -22,25 +22,9 @@
 ## Installation
 
 ```shell
-# bun
 bun i -D @archoleat/commitlint-define-config
 ```
 
-```shell
-# pnpm
-pnpm i -D @archoleat/commitlint-define-config
-```
-
-```shell
-# npm
-npm i -D @archoleat/commitlint-define-config
-```
-
-```shell
-# yarn
-yarn add -D @archoleat/commitlint-define-config
-```
-
 ## Usage
 
 See [Commitlint Configuration](https://commitlint.js.org/reference/configuration.html).