R1:ea376685ae9e

Fix some odd looking arrays

Summary: These arrays looks a little odd, most likely due to the autofix applied by `ArcanistXHPASTLinter::LINT_ARRAY_SEPARATOR`. See D12296 in which I attempt to improve the autocorrection from this linter rule.

Test Plan: N/A

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D12281