Make npm lowercase in the GitLab Package Registry UI

Problem to solve

npm is a package manager for the JavaScript programming language. npm, Inc. is a subsidiary of GitHub, that provides hosting for software development and version control with the usage of Git.

The GitLab application often represents npm in all caps as NPM. I believe this is incorrect and should be updated to be all lowercase.

Proposal

Update NPM to npm in the Package Registry UI and consider updating the codebase to update NPM to npm.