docs: update mergify bagde

See https://docs.mergify.com/badge/

Author: coderbyheart

README.md

@@ -3,7 +3,7 @@
 [![GitHub Actions](https://github.com/NordicSemiconductor/asset-tracker-cloud-eslint-config-typescript/workflows/Semantic%20Release/badge.svg)](https://github.com/NordicSemiconductor/asset-tracker-cloud-eslint-config-typescript/actions)
 [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release)
 [![Renovate](https://img.shields.io/badge/renovate-enabled-brightgreen.svg)](https://renovatebot.com)
-[![Mergify Status](https://img.shields.io/endpoint.svg?url=https://gh.mergify.io/badges/NordicSemiconductor/asset-tracker-cloud-eslint-config-typescript)](https://mergify.io)
+[![Mergify Status](https://img.shields.io/endpoint.svg?url=https://api.mergify.com/v1/badges/NordicSemiconductor/asset-tracker-cloud-eslint-config-typescript)](https://mergify.io)
 [![Commitizen friendly](https://img.shields.io/badge/commitizen-friendly-brightgreen.svg)](http://commitizen.github.io/cz-cli/)
 [![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg)](https://github.com/prettier/prettier/)
 [![ESLint: TypeScript](https://img.shields.io/badge/ESLint-TypeScript-blue.svg)](https://github.com/typescript-eslint/typescript-eslint)