[BUGFIX] Fix number of search terms in backend module

because of a wrong query that leads to a too high number

Classes/Domain/Repository/SearchRepository.php

@@ -32,7 +32,7 @@ class SearchRepository extends AbstractRepository
     public function findCombinedBySearchIdentifier(FilterDto $filter): array
     {
         $connection = DatabaseUtility::getConnectionForTable(Search::TABLE_NAME);
-        $sql = 'select count(*) count, searchterm from ' . Search::TABLE_NAME . ' s'
+        $sql = 'select count(distinct s.uid) count, searchterm from ' . Search::TABLE_NAME . ' s'
             . ' left join ' . Pagevisit::TABLE_NAME . ' pv on s.pagevisit = pv.uid'
             . ' left join ' . Visitor::TABLE_NAME . ' v on s.visitor = v.uid'
             . ' left join ' . Categoryscoring::TABLE_NAME . ' cs on cs.visitor = v.uid'