fix(docs): change filter arguments to match PascalCase

Description

It fixes documentation of the command-line interface for the filter command.

Change documentation of filter command to match internally used PascalCase

Fixes #3877

[x] Bug fix (non-breaking change which fixes an issue)
[ ] New feature (non-breaking change which adds functionality)
[ ] Breaking change (fix or feature that would cause existing functionality to change)
- [ ] This change is only breaking for integrators, not for external standards or end-users.
[x] Documentation improvement

[x] I have checked there is no other PR open for the same change.
[ ] I have read the Contribution Guidelines.
[x] I grant the project the right to include and distribute the code under the BSD-3-Clause license (and I have the right to grant these rights).
[ ] I have added tests to cover my changes.
[ ] I have verified that the code complies with the projects coding standards.
[ ] [Required for new sniffs] I have added XML documentation for the sniff.
[ ] [Required for new files] I have added any new files to the package.xml file.