Issue #1355670 by pwolanin, NROTC_Webmaster, xjm: API docs cleanup for Search module

core/modules/search/lib/Drupal/search/SearchQuery.php

core/modules/search/search.admin.inc

core/modules/search/search.api.php

core/modules/search/search.install

core/modules/search/search.module

core/modules/search/search.pages.inc

core/modules/search/templates/search-result.tpl.php

...ts/modules/search_embedded_form/search_embedded_form.info

.../modules/search_embedded_form/search_embedded_form.module

...ch/tests/modules/search_extra_type/search_extra_type.info

.../tests/modules/search_extra_type/search_extra_type.module