style: format code with Gofumpt and Prettier

This commit fixes the style issues introduced in 6c47785 according to the output
from Gofumpt and Prettier.

Details: #2645

README.md

@@ -264,7 +264,9 @@ make init
 ## Contributors
 
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
+
 [![All Contributors](https://img.shields.io/badge/all_contributors-21-orange.svg?style=flat-square)](#contributors)
+
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):