Fix generated markdown search link not prefilling the query field

- When improving the search the field name for the query also changed. Adapt the markdown parser to use the new field name so the query field can be prefilled when searching for user handles

src/Markdown/CommonMark/MentionLinkParser.php

@@ -148,7 +148,7 @@ private function resolveRouteDetails(MentionType $type): array
             MentionType::Magazine => ['route' => 'front_magazine', 'param' => 'name'],
             MentionType::RemoteMagazine => ['route' => 'front_magazine', 'param' => 'name'],
             MentionType::RemoteUser => ['route' => 'user_overview',  'param' => 'username'],
-            MentionType::Search => ['route' => 'search',         'param' => 'q'],
+            MentionType::Search => ['route' => 'search',         'param' => 'search[q]'],
             MentionType::User => ['route' => 'user_overview',  'param' => 'username'],
         };
     }