Fix lite links to be relative

Author: jasongrout

docs/source/index.rst

@@ -13,8 +13,8 @@ Try it online
 -------------
 
 You can try ipyleaflet below, or open the example in a new browser tab with
-`RetroLite <https://ipyleaflet.readthedocs.io/en/latest/lite/retro?path=ipyleaflet.ipynb>`_ or
-`JupyterLite <https://ipyleaflet.readthedocs.io/en/latest/lite/lab?path=ipyleaflet.ipynb>`_.
+`RetroLite <./lite/retro?path=ipyleaflet.ipynb>`_ or
+`JupyterLite <./lite/lab?path=ipyleaflet.ipynb>`_.
 
 .. retrolite:: ipyleaflet.ipynb