feature/#287 fixes contextual menu button to support options light

[thomasgauvin]

Please provide a link to the associated issue.

#287

Please provide a brief summary of this pull request.

Added the correct class to mirror contextual menu in Fiori Fundamentals documentation.

If this is a new feature, have you updated the documentation?

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[CLAassistant]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

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Thomas Gauvin seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}