test/support: Update remote for sideless docs
test/support: Update remote for sideless docs

  If the `remote` metadata of a built document is not equivalent to the
  main metadata, we should rebuild it even if we don't have sides.
  This makes sure unmerged documents have up-to-date data.

cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop