fix weborama conf example as in Prebid.js/modules/weboramaRtdProvider.md (#3330)
fix weborama conf example as in Prebid.js/modules/weboramaRtdProvider.md (#3330)

* fix weborama conf example as in Prebid.js/modules/weboramaRtdProvider.md

* fix closing parentesis

* fix ponctuation
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