Update old routes in docs, code comments to a new format
Example of leftover !30730 (comment 353222060)
TODO:
-
Update doc
with new routing for blob, tree, issues, merge_requests for gitlab.com links => !63508 (merged) -
Update spec with new routing for repository, issues, merge_requests, pipelines => !53865 (merged)
Edited by Dmytro Zaporozhets (DZ)