Merge branch 'aqualls-modify-tracing-strings' into 'master'

Fix capitalization of observability strings

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/135411



Merged-by: Anna Vovchenko <avovchenko@gitlab.com>
Approved-by: Daniele Rossetti <drossetti@gitlab.com>
Approved-by: Sacha Guyon <sguyon@gitlab.com>
Approved-by: Diana Zubova <dzubova@gitlab.com>
Approved-by: Anna Vovchenko <avovchenko@gitlab.com>
Co-authored-by: Amy Qualls <aqualls@gitlab.com>