docs: fix .eslintrc.json syntax in eslint-plugin-dev readme

[MikeMcC399]

Additional details

In npm/eslint-plugin-dev/README.md the instructions for creating .eslintrc.json included a syntax error due to an extra comma. The documentation is corrected to remove the comma.

The error message shown by ESLint contained the following text:

Error: Unexpected token ']', ..."neral",
  ]
}
" is not valid JSON

Steps to test

On Ubuntu 22.04.4 LTS with Node.js 20.12.2, execute the following:

mkdir eslint-plugin-dev-test
cd eslint-plugin-dev-test
git init
npm init -y
npm install eslint@7 @cypress/eslint-plugin-dev eslint-plugin-json-format @typescript-eslint/parser@6 @typescript-eslint/eslint-plugin@6 eslint-plugin-mocha -D

Add the file .eslintrc.json with the following contents to the root of the above project:

{
  "plugins": [
    "@cypress/dev"
  ],
  "extends": [
    "plugin:@cypress/dev/general"
  ]
}

touch index.js
npx eslint .

How has the user experience changed?

There is no change to the end-user experience. This is a documentation-only change which affects Cypress developers only.

PR Tasks

• [na] Have tests been added/updated?
• [na] Has a PR for user-facing changes been opened in cypress-documentation?
• [na] Have API changes been updated in the type definitions?

[cypress-app-bot]

• Create a Draft Pull Request if your PR is not ready for review. Mark the PR as Ready for Review when you're ready for a Cypress team member to review the PR.

[jennifer-shehane]

@MikeMcC399 Indeed. Thanks for fixing!