[lint-staged] Lint Terraform files in subdirs

Summary: Noticed that lint is not running in subdirs after I moved config donwn the tree. This diff fixes that.

Test Plan: Changed terraform files in services/terraform/remote, then git commit - lint was running as expected.

Reviewers: varun, atul, michal, jon

Reviewed By: jon

Subscribers: ashoat, tomek

Differential Revision: https://phab.comm.dev/D8584