Improve text for codeclimate report

Improves code coverage text to sound less condescending.

Does this MR meet the acceptance criteria?

• Tests
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #2951 (closed)

restored source branch 2951-codeclimate-report

restored source branch 2951-codeclimate-report

@tauriedavis can you please review? Thanks!

I believe the failing job is also failing for master

assigned to @tauriedavis

approved this merge request

LGTM! Thanks @filipa!

assigned to @annabeldunstone

assigned to @filipa

@iamphill can you please merge? Thanks!

assigned to @iamphill

marked the checklist item All builds are passing as completed

merged

mentioned in commit a727a136