Fix small linter issue with changelog file

[csm10495]

Small fix to changelog file to fix a lint failure

Should fix: #718 (comment)

Related issue number

NA

Checklist

• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes
• If you provide code modifications, please add yourself to CONTRIBUTORS.txt
  • The format is <Name> <Surname>.
  • Please keep the list in alphabetical order, the file is sorted by name.
• Add a new news fragment into the CHANGES folder
  • name it <issue_id>.<category> for example (588.bugfix)
  • if you don't have an issue_id change it to the pr id after creating the pr
  • ensure category is one of the following:
    • .bugfix: Signifying a bug fix.
    • .feature: Signifying a new feature.
    • .breaking: Signifying a breaking change or removal of something public.
    • .doc: Signifying a documentation improvement.
    • .packaging: Signifying a packaging or tooling change that may be relevant to downstreams.
    • .contrib: Signifying an improvement to the contributor/development experience.
    • .misc: Anything that does not fit the above; usually, something not of interest to users.
  • Make sure to use full sentences with correct case and punctuation, for example: "Fix issue with non-ascii contents in doctest text files."

[webknjaz]

Thanks!