[services] Fix clang paths
Summary:
https://linear.app/comm/issue/ENG-915/services-fix-clang-paths
Fixing clang paths that are broken because of the directory refactoring
Test Plan:
yarn clang-format-all
Reviewers: palys-swm, ashoat
Reviewed By: ashoat
Subscribers: ashoat, palys-swm, Adrian, atul, yayabosh
Differential Revision: https://phabricator.ashoat.com/D3873