Use sentence case in `job.detailedStatus.text`

The following discussion from !129730 (merged) should be addressed:

• @mrincon started a discussion:

  For follow up: This <ci-badge-link> result is currently not showing a correct case for the badge.

  

  These badges values are generated by the backend so we should aim to fix this it there, globally for all CI badges.

  cc @gdoyle