"Needs Description" check should ignore decription templates

[gbenatt92]

Proposal:

Modify the check for description at https://github.com/loadsmart/peril-settings/blob/master/rules/common/needsDescription.ts to consider our pre-made PR description templates as if it was empty.

Reasoning

A lot of people forget to fill the templates and send PRs for review without the proper information. Unfortunately, having the template means the check for description will always pass.

Exceptions:

We shouldn't try to apply it over all templates, but at least the one in Alice.