fixed several doc blocks

core/API/ResponseBuilder.php

core/Archive.php

core/Archive/DataCollection.php

core/Archive/DataTableFactory.php

core/ArchiveProcessor/Rules.php

core/DataAccess/ArchiveWriter.php

core/DataArray.php

core/DataTable.php

core/EventDispatcher.php

core/Period.php

core/Piwik.php

core/Site.php

core/Tracker/Db/Mysqli.php

core/Tracker/GoalManager.php

core/Tracker/VisitExcluded.php

plugins/API/API.php

plugins/API/ProcessedReport.php

plugins/API/RowEvolution.php

plugins/Actions/Actions.php

plugins/Actions/Archiver.php