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