Issue #1969256 by zhuber, ronan.orb: Replace stdClass with object in param docs, as per standards

core/includes/install.inc

core/lib/Drupal/Core/Cache/DatabaseBackend.php

core/lib/Drupal/Core/Cache/MemoryBackend.php

core/modules/field/field.module

core/modules/locale/lib/Drupal/locale/Gettext.php

core/modules/locale/locale.translation.inc

...views/lib/Drupal/views/Plugin/views/row/RowPluginBase.php