Update README as we now use litestar, not quart, as our Python web framework.

Author: dbrnz

README.rst

@@ -1,7 +1,7 @@
 Flatmap Server
 ==============
 
-An anatomical flatmap server to provide `MapLibre <https://maplibre.org/>`_ compatible tilesets generated by `flatmap-maker <https://github.com/AnatomicMaps/flatmap-maker>`_. It is intended for use with a browser-based `flatmap-viewer <https://github.com/AnatomicMaps/flatmap-viewer>`_ application. The server is written in Python using the `Quart <https://quart.palletsprojects.com/en/latest/index.html>`_ web framework.
+An anatomical flatmap server to provide `MapLibre <https://maplibre.org/>`_ compatible tilesets generated by `flatmap-maker <https://github.com/AnatomicMaps/flatmap-maker>`_. It is intended for use with a browser-based `flatmap-viewer <https://github.com/AnatomicMaps/flatmap-viewer>`_ application. The server is written in Python using the `Litestar <https://docs.litestar.dev/latest/>`_ ASGI web framework.
 
 Documentation
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