Search field in Docs page does not redirect properly

When searching for any class in the search field of WildFly Elytron documentation page: https://wildfly-security.github.io/wildfly-elytron/documentation/api/current/index.html and clicking on found results, the URL throws 404. This is because there is additional `\undefined` part of the URL that must be removed in order for the URL to work.

Eg. search redirects to page:

https://wildfly-security.github.io/wildfly-elytron/documentation/api/current/undefined/org/wildfly/security/auth/server/SecurityDomain.html

but it should be:

https://wildfly-security.github.io/wildfly-elytron/documentation/api/current/org/wildfly/security/auth/server/SecurityDomain.html