Corrected DataSetvice to DataService

[francescalb]

Description

Type of change

• Bug fix and code cleanup
• New feature
• Documentation update
• Testing

Checklist for the reviewer

This checklist should be used as a help for the reviewer.

• Is the change limited to one issue?
• Does this PR close the issue?
• Is the code easy to read and understand?
• Do all new feature have an accompanying new test?
• Has the documentation been updated as necessary?
• Is the code properly tested?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.46%. Comparing base (5863d0a) to head (c1ce6db).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #374   +/-   ##
=======================================
  Coverage   80.46%   80.46%           
=======================================
  Files          25       25           
  Lines        2974     2974           
=======================================
  Hits         2393     2393           
  Misses        581      581           

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[jesper-friis]

Var ikke klar over at rekkefølgen har noe å si. Eller er det bare for å få det i alfabetisk rekkefølge?