Update loader.js

Request Type: docs

How to reproduce:

Component(s): misc core

Impact: small

Complexity: small

This issue is related to:

Detailed Description:

improve descriptive comment on module.name

Other Comments:

Request Type: docs

How to reproduce:

Component(s): di

Impact: small

Complexity: small

This issue is related to:

Detailed Description:

documentation update: also mention controllers as components in a module

Other Comments:

improve descriptive comment on module