add "Gramps Web" to section Genealogy (#3490)

* add "Gramps Web"
Co-authored-by: nodiscc <nodiscc@gmail.com>

README.md

@@ -1050,6 +1050,7 @@ Utilities for managing game servers.
 
 - [Genea.app](https://www.genea.app/) - Genea is a privacy by design and open source tool anyone can use to author or edit their family tree. Data is stored in the GEDCOM format and all processing is done in the browser. ([Source Code](https://github.com/genea-app/genea-app)) `MIT` `Javascript`
 - [GeneWeb](https://geneweb.tuxfamily.org/wiki/GeneWeb) - GeneWeb is an open source genealogy software written in OCaml. It comes with a Web interface and can be used off-line or as a Web service. ([Demo](https://demo.geneweb.tuxfamily.org/gw7/), [Source Code](https://github.com/geneweb/geneweb)) `GPL-2.0` `OCaml`
+- [Gramps Web](https://gramps-project.github.io/web/) - Gramps Web is a web app for collaborative genealogy. It is based on and interoperable with Gramps, the leading open source genealogy desktop application. ([Demo](https://gramps-project.github.io/web/), [Source Code](https://github.com/gramps-project/gramps-webapi)). `AGPL-3.0` `Docker`
 - [webtrees](https://www.webtrees.net) - Webtrees is the web's leading on-line collaborative genealogy application. ([Demo](https://dev.webtrees.net/demo-stable/index.php?ctype=gedcom&ged=demo), [Source Code](https://github.com/fisharebest/webtrees)) `GPL-3.0` `PHP`