SDC's discovery has overly lenient regex

Problem/Motivation

If you happen to have a file ending in component.yml in a directory named components, SDC will assume it is their component.
It's supposed to only find files ending in .component.yml (with that extra dot)

Steps to reproduce

Create a components directory and add a YAML file ending in components.yml but not .components.yml

Proposed resolution

Fix the regex

Remaining tasks

N/A

User interface changes

N/A

API changes

N/A

Data model changes

N/A

Release notes snippet

N/A