Fixes #552: Doxygen generation appears to be wrong for some definitions

[Alftron]

Please check if the PR fulfills these requirements

• [x] The commit message follows our guidelines
• [ ] Tests for the changes have been added (for bug fixes / features)
• [ ] Documentation has been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...) This change fixes the brief tags that were appearing in the Doxygen documentation

Is there an open issue that this resolves? If so, please link it here. Fixes #552

What is the current behavior? (You can also link to an open issue here) Capitalised Doxygen @Brief tags are appearing in documentation

What is the new behavior (if this is a feature change)? Capitalised Doxygen @Brief tags will no longer appear in the documentation titles

Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?) No

Other information: N/A

[CLAassistant]

All committers have signed the CLA.

[RubyNova]

Hi there, we appreciate your willingness to help, but we do have a process - from both requesting the issue to be assigned to you, to filling out the form correctly in the PR template.

Can you please follow this process? Thanks.

[Alftron]

PR has been updated according to the template. Apologies.

[RubyNova]

No worries - I'll review this when I get the time.